k.farrugia

TL3 Regular · Thessaloniki, GR

Journal club attendee. Interested in trial design more than in trial conclusions.

Joined 31 December 2024 · last posted 2d · groups: journal-club

142 posts, newest first. Showing up to 150.

CJC-1295 with and without DAC: what the modification does Replied, post #123 · Compounds › Secretagogues & GH axis · 26 Jul 2026 · 22 likes I read post #121 twice before replying, because I had assumed the opposite. Why this subcategory is stricter about sourcing than most: the evidence base is weaker and…
Priming a pen and whether the primed volume is wasted Replied, post #22 · Devices › Pens & autoinjectors · 24 Jul 2026 · 1 like I disagree with the reply above, and I think the disagreement is substantive rather than terminological. The distinction being drawn does not survive when you look at…
Reading order for a first week here, and what to skip until later — what changed since Replied, post #74 · Start Here › Welcome · 23 Jul 2026 · 1 like The compound and evidence pages are updated regularly and they are worth reading when you are new. They answer the meta questions like "do we have data on this" and…
Semaglutide formulation: what is in the licensed product besides the peptide Replied, post #33 · Compounds › Semaglutide · 20 Jul 2026 · 1 like This follows post #30 rather than contradicting it. Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still…
Seven-day rolling means and why weekly readings mislead Replied, post #42 · Outcomes › Progress reports · 16 Jul 2026 · 0 likes For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add the caveats that make it safe to use.
How shortages have affected compounding permissions Replied, post #42 · Access › Shortages · 16 Jul 2026 · 1 like Resuming after a gap: after a gap of days or a few weeks, most people resume at the dose they were on when they stopped. Gaps of months might require retitration…
Pancreatitis history and the risk calculus Replied, post #29 · Safety › Contraindications · 16 Jul 2026 · 10 likes Picking up post #26: that is the part I would want checked first. Pregnancy: these compounds are not approved for pregnancy. The potential risks outweigh potential…
What consumer-accessible tests can and cannot determine — a second dataset Replied, post #71 · Analytics › Home & field testing · 10 Jul 2026 · 0 likes Why third-party testing is stronger: a home test run by the person who made the compound is a self-selected result. The test run by a neutral third party removes…
Historical amylin analogues and what happened to them Replied, post #29 · Compounds › Cagrilintide & amylin analogues · 9 Jul 2026 · 8 likes Is synergy the right word for the combination data? A phase 2 trial cannot establish whether effects are synergistic or additive. Synergy is a mechanistic claim that…
A site rotation scheme that is easy enough to actually follow Replied, post #109 · Practice › Administration · 8 Jul 2026 · 2 likes Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather than quietly editing. The correction was fair and I had…
Stepping down deliberately, and how to do it without losing progress — what changed since Replied, post #22 · Practice › Dosing & titration · 28 Jun 2026 · 0 likes The arithmetic of an intermediate dose: if the label says 1.0 mg and 2.0 mg, a dose strictly between them is off-label by definition. Some people compute it anyway. The…
GHRH analogues versus ghrelin mimetics: different mechanisms, conflated discussion Replied, post #31 · Compounds › Secretagogues & GH axis · 26 Jun 2026 · 1 like Coming back to post #29, because the follow-up matters more than the original answer. Practical note that does not fit anywhere else. Whatever you conclude from this…
Why the timeline is on the right and not the left — what changed since Replied, post #62 · Meta › Site feedback · 26 Jun 2026 · 31 likes I disagree with the reply above, and I think the disagreement is substantive rather than terminological. The distinction being drawn does not survive when you look at…
I have no scientific background — can I still follow the analytics categories? Replied, post #26 · Start Here › Welcome · 25 Jun 2026 · 0 likes The FAQ link in the sidebar is maintained and worth ten hours of forum browsing. It is not comprehensive but it is well indexed for the questions that come up most.
GLP-1 receptor distribution: central and peripheral Replied, post #76 · Pharmacology › Receptor biology · 24 Jun 2026 · 17 likes post #75 answers the question as asked. The question underneath it is different. GIP receptor signalling: the glucose-dependent insulinotropic peptide receptor (GIP) is…
Secretagogues and glucose tolerance: the mechanistic concern Replied, post #43 · Compounds › Secretagogues & GH axis · 21 Jun 2026 · 11 likes For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add the caveats that make it safe to use.
Named, unnamed and unspecified impurities as regulatory categories — the long version Replied, post #12 · Analytics › Impurities & related substances · 20 Jun 2026 · 14 likes Residual solvents: traces of solvents used in purification. These are usually tested by gas chromatography, not by HPLC. A specification for residual solvents should be…
[2026 update] A vial that will not fully dissolve: what to check and in what order Replied, post #111 · Practice › Reconstitution · 16 Jun 2026 · 0 likes Picking up post #108: that is the part I would want checked first. I disagree with the reply above, and I think the disagreement is substantive rather than…
Secretagogues and glucose tolerance: the mechanistic concern Replied, post #36 · Compounds › Secretagogues & GH axis · 15 Jun 2026 · 25 likes Reading a rodent study on a secretagogue without over-extrapolating: rodent studies can show a mechanism is plausible. They cannot show magnitude of effect in humans or…
Trust level 3 requirements: a clarification — does this still hold? Replied, post #62 · Meta › Announcements · 10 Jun 2026 · 8 likes Worth separating two things that post #58 runs together. Staff-only posts: some announcements are visible only to staff (concerning internal operations). Members see…
Lean mass preservation: what the evidence supports — does this still hold? Replied, post #86 · Outcomes › Body composition · 31 May 2026 · 0 likes Resting metabolic rate: body composition affects metabolic rate. As fat mass decreases and lean mass is maintained, metabolic rate is usually maintained better than…
Reflectance and photometric devices: precision in practice — a second dataset Replied, post #39 · Analytics › Home & field testing · 30 May 2026 · 15 likes post #38 is right about the mechanism and I think understates the practical bit. Lateral-flow devices: like a rapid COVID test. They have a reagent strip and produce a…
Packaging that arrived damaged: documenting it properly Replied, post #14 · Sourcing › Logistics · 24 May 2026 · 0 likes Coming back to post #12, because the follow-up matters more than the original answer. Import restrictions by jurisdiction: what is legal to import for personal use…
Revisiting: Liver enzymes drifting down and what that usually means Replied, post #33 · Clinical › Bloodwork · 17 May 2026 · 3 likes Worth separating two things that post #29 runs together. Fasting state: some lab tests require fasting; others do not. Lipids on a fasting draw differ from lipids on a…
Semaglutide formulation: what is in the licensed product besides the peptide Replied, post #10 · Compounds › Semaglutide · 15 May 2026 · 1 like Picking up post #7: that is the part I would want checked first. Approved indications differ by jurisdiction and change. As of mid-2026 the weight-management indication…
[2026 update] Are there stupid questions here? A staff answer, at length Replied, post #34 · Start Here › Welcome · 9 May 2026 · 23 likes Picking up post #31: that is the part I would want checked first. The FAQ link in the sidebar is maintained and worth ten hours of forum browsing. It is not…
Follow-up: Comparing two chromatograms from different laboratories, properly Replied, post #23 · Analytics › HPLC & UHPLC · 7 May 2026 · 2 likes On post #19 — agreed on the reasoning, with one qualification. Practical note that does not fit anywhere else. Whatever you conclude from this topic, write down what…
Moderation log format change Replied, post #49 · Meta › Announcements · 1 May 2026 · 6 likes Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the…
Why the absence of controlled human data on BPC-157 matters more than people admit Replied, post #18 · Compounds › Repair & healing peptides · 29 Apr 2026 · 3 likes post #17 is right about the mechanism and I think understates the practical bit. What would change the position on repair peptides: adequately powered, published,…
Follow-up: Reconciling a label claim with a content assay Replied, post #17 · Analytics › COA interpretation · 28 Apr 2026 · 4 likes This follows post #14 rather than contradicting it. Reading old certificates: if a certificate is dated years ago, the lot it describes might be old. That is not…
Coming back to: Measurement error in a self-reported exposure Replied, post #25 · Evidence › Study critique · 28 Apr 2026 · 0 likes Building consensus on which criticisms matter: if everyone agrees that the sample size is small but only you think that affects the conclusion, maybe your criticism is…
Follow-up: Tirzepatide and nausea: is the profile genuinely different or just… Replied, post #3 · Compounds › Tirzepatide · 26 Apr 2026 · 0 likes Mass and charge states: tirzepatide is about 4813.5 Da and on an electrospray instrument you would expect to see charge states mostly in the 2+ to 4+ range, the same as…
Pregnancy and pregnancy planning: contraindication and washout Replied, post #122 · Clinical › Special populations · 24 Apr 2026 · 0 likes Medullary thyroid carcinoma history: an absolute contraindication because of the preclinical findings in rodent toxicology. The history (personal or family, especially…
Follow-up: State-level differences that actually matter Replied, post #6 · Regional › North America · 3 Apr 2026 · 2 likes Regional variation in North America: access differs substantially by US state and Canadian province. Postcode is a major determinant of access.
Five questions in one post gets you one answer — how to split them Replied, post #46 · Start Here › How to Ask · 3 Apr 2026 · 1 like The specific question in the title is more useful than you might think. A title like "a question I have" forces the person answering to guess what you want to know. A…
Grapefruit: why this class is not the class that cares Replied, post #52 · Practice › Interactions · 18 Mar 2026 · 32 likes On post #48 — agreed on the reasoning, with one qualification. Separation timing versus clinically important interaction: a separation timing inconvenience (taking one…
Research-use-only status: what it means legally and practically Replied, post #15 · Compounds › Other compounds · 16 Mar 2026 · 1 like Research-use-only status is a legal classification, not a safety classification. It means the compound is sold for laboratory use and not for human consumption or…
Introducing myself: pharmacist, sceptic, reluctant participant — one year on Replied, post #61 · Lounge › Introductions · 14 Mar 2026 · 0 likes Welcome: the response to introductions is usually welcome. People will reply to introduce themselves back or to let you know they are glad you are here.
Introducing myself: pharmacist, sceptic, reluctant participant — one year on Replied, post #14 · Lounge › Introductions · 8 Mar 2026 · 32 likes Privacy: share only what you are comfortable making permanent and public. An introduction is archived and searchable; do not include information you will later regret…
Guidelines revision: what changed and why — one year on Replied, post #78 · Meta › Announcements · 5 Mar 2026 · 15 likes RSS: if you prefer to receive announcements by feed rather than visiting the site, RSS is available for this subcategory.
Drawing up with one needle and injecting with another Started this topic · Practice › Administration · 23 Feb 2026 · 0 likes On the subject in the title: Drawing up with one needle and injecting with another Working notes rather than a conclusion. Practical question with the units stated,…
Anxiety in the first weeks: drug, situation, or both — what changed since Replied, post #95 · Wellbeing › Mental health · 22 Feb 2026 · 0 likes Body image and weight loss: large weight loss changes a person's relationship with their body in ways that can be psychologically complex. Some of that is positive;…
Waist circumference technique and its repeatability Replied, post #53 · Outcomes › Progress reports · 18 Feb 2026 · 17 likes post #52 answers the question as asked. The question underneath it is different. Rate of change: reporting progress as "lost 5 kg in 12 weeks" is more useful than…
Reused chromatograms across lots: how to spot it — what changed since Replied, post #18 · Analytics › COA interpretation · 17 Feb 2026 · 16 likes What fields matter on a certificate: lot number matching the vial, test date, the analytical method stated specifically, the measured result as a number, and the…
Documenting a payment dispute without naming and shaming Replied, post #3 · Sourcing › Payments · 13 Feb 2026 · 8 likes Fraud and scams: if a supplier demands payment upfront with no recourse if delivery fails, you are taking a risk. Reputation and history of other buyers matter.
Seven-day rolling means and why weekly readings mislead — one year on Replied, post #42 · Outcomes › Progress reports · 12 Feb 2026 · 12 likes I read post #40 twice before replying, because I had assumed the opposite. Practical note that does not fit anywhere else. Whatever you conclude from this topic, write…
Trifluoroacetate content and its consequences Replied, post #97 · Analytics › Impurities & related substances · 6 Feb 2026 · 0 likes Incomplete deprotection: mass higher by the protecting group mass. Usually markedly later eluting. A synthesis artifact from incomplete removal of protecting groups.
Injection discomfort: needle gauge, volume, temperature, technique Replied, post #21 · Practice › Administration · 1 Feb 2026 · 15 likes Bleeding at the injection site: normal and usually minimal. A little blood at the needle site after withdrawal is not a reason to assume you lost a significant dose.…
Ultrasound and skinfolds: operator dependence in practice — what changed since Replied, post #12 · Outcomes › Body composition · 31 Jan 2026 · 0 likes This follows post #9 rather than contradicting it. Bioelectric impedance analysis: less precise than DXA and strongly affected by hydration state. Not reliable for…
Research-use-only status: what it means legally and practically Started this topic · Compounds › Other compounds · 30 Jan 2026 · 0 likes Research-use-only status: what it means legally and practically Writing it up because I had to work it out twice and would rather nobody else did. I have seen…
Stability of BPC-157 in solution: what has been measured — one year on Started this topic · Compounds › Repair & healing peptides · 16 Jan 2026 · 0 likes On the subject in the title: Stability of BPC-157 in solution: what has been measured — one year on Working notes rather than a conclusion. Comparing STEP 2 ( Lancet ,…
Promotion criteria, and the one that stops most nominations — the long version Replied, post #127 · Documentation › Doc review · 6 Jan 2026 · 1 like Evidence synthesis requests: if you think a page should summarise the state of evidence on a question, and you think the information exists but is scattered, suggest…
Amylin receptor signalling and satiety — what changed since Replied, post #12 · Pharmacology › Receptor biology · 4 Jan 2026 · 0 likes Glucagon receptor agonism: glucagon receptor agonism increases energy expenditure and promotes hepatic fat oxidation. The mechanism is distinct from GLP-1 and GIP…
[2026 update] Reading a supplementary appendix and finding the interesting part Started this topic · Evidence › Trials · 28 Dec 2025 · 19 likes On the subject in the title: Reading a supplementary appendix and finding the interesting part Working notes rather than a conclusion. Comparing SELECT ( N Engl J Med ,…
Injection discomfort: needle gauge, volume, temperature, technique Replied, post #8 · Practice › Administration · 24 Dec 2025 · 0 likes Drawing up with one needle and injecting with another: a reasonable practice if you have extra needles. Fresh needle for injection reduces tissue drag and can decrease…
Semaglutide half-life: where the 165 to 184 hour figure comes from Replied, post #72 · Compounds › Semaglutide · 18 Dec 2025 · 4 likes Semaglutide versus liraglutide in STEP 8: semaglutide produced greater weight reduction and the discontinuation rates differed. But the trial was open-label for the…
Reading an interaction checker output critically Replied, post #69 · Practice › Interactions · 18 Dec 2025 · 0 likes Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the…
Revisiting: Journal club: SURMOUNT-1, read without the press release Replied, post #2 · Evidence › Journal club · 10 Dec 2025 · 18 likes SURMOUNT-OSA (N Engl J Med 2024): Tirzepatide in obstructive sleep apnoea, using an objective physiological endpoint. Notable because soft endpoints are avoided. Two…
Tirzepatide in type 2 diabetes: the SURPASS programme, summarised honestly — the long… Replied, post #67 · Compounds › Tirzepatide · 9 Dec 2025 · 0 likes Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the…
Tirzepatide in type 2 diabetes: the SURPASS programme, summarised honestly — the long… Replied, post #16 · Compounds › Tirzepatide · 1 Dec 2025 · 30 likes For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add the caveats that make it safe to use.
Oral semaglutide bioavailability and its variability between people Replied, post #17 · Compounds › Oral incretins · 25 Nov 2025 · 2 likes PIONEER programme is phase 3 for oral semaglutide. The trials cover multiple indications and durations. Reading them requires attention to which trial is which because…
Revisiting: Aggregates and why a purity assay may miss them entirely Replied, post #11 · Analytics › Impurities & related substances · 15 Nov 2025 · 4 likes Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather than quietly editing. The correction was fair and I had…
Thyroid function tests during substantial weight change Replied, post #131 · Clinical › Bloodwork · 12 Nov 2025 · 5 likes Liver enzymes: elevation does not specify cause. ALT and AST can rise from many things. Bilirubin helps narrow down the cause. Multiple markers together are more…
[2026 update] Splitting an overlong document into two Replied, post #49 · Documentation › Wiki requests · 11 Nov 2025 · 0 likes Format suggestions: if you think a maintained page could be clearer in its presentation (different section structure, different examples, added graphics) suggest the…
[2026 update] What steady state means for the decision to escalate Replied, post #56 · Practice › Dosing & titration · 11 Nov 2025 · 1 like Coming back to post #54, because the follow-up matters more than the original answer. Stepping down deliberately: the withdrawal trials show that stopping is followed…
Coming back to: Why most self-reports here are not experiments, and that is fine Replied, post #13 · Research Methods › N-of-1 designs · 20 Oct 2025 · 23 likes post #12 answers the question as asked. The question underneath it is different. Washout periods: after stopping a medication, how long does it take for the effect to…
New subcategory: rationale and scope Replied, post #38 · Meta › Announcements · 16 Oct 2025 · 0 likes post #37 is right about the mechanism and I think understates the practical bit. Implementation timeline: announcements include when a change takes effect. Marking the…
Availability by country, dated, with primary sources Replied, post #20 · Access › International · 14 Oct 2025 · 1 like post #19 is right about the mechanism and I think understates the practical bit. Insurance and coverage: coverage decisions are national. A compound approved in one…
Airline travel with a temperature-sensitive injectable — what changed since Replied, post #87 · Devices › Cold chain · 8 Oct 2025 · 0 likes Worth separating two things that post #83 runs together. Freeze-thaw: some peptides tolerate freezing; others do not. Check your compound's labelling. Generally,…
Sleep quality changes during weight loss — what changed since Replied, post #12 · Wellbeing › Sleep · 29 Sep 2025 · 0 likes Stimulants and sleep: if supplementing with caffeine or other stimulants for energy during weight loss, timing and dose matter for sleep. Evening stimulant use…
Which panel is worth repeating and which is worth ignoring Replied, post #123 · Clinical › Bloodwork · 28 Sep 2025 · 26 likes Picking up post #120: that is the part I would want checked first. Liver enzymes: elevation does not specify cause. ALT and AST can rise from many things. Bilirubin…
What a purity-only report leaves out Replied, post #18 · Sourcing › Independent verification · 18 Sep 2025 · 7 likes post #17 is right about the mechanism and I think understates the practical bit. PeptideMeter: purity analysis plus structured, dated supplier verification records.…
Which panel is worth repeating and which is worth ignoring Replied, post #112 · Clinical › Bloodwork · 16 Sep 2025 · 2 likes post #111 is right about the mechanism and I think understates the practical bit. Thank you for the correction. I have edited my earlier post with a note rather than…
Discussing something you have already been doing Replied, post #5 · Clinical › Prescriber conversations · 15 Sep 2025 · 16 likes Picking up post #2: that is the part I would want checked first. Understanding stopping rules: what would prompt stopping the compound? Adverse effect, lack of benefit…
Aggregated purity results across four services, with caveats — a second dataset Replied, post #82 · Data & Tools › Datasets · 9 Sep 2025 · 0 likes Limitations of datasets: all community-collected data has limitations. The population is self-selected (people in this community are not representative of all people…
Aggregated purity results across four services, with caveats — a second dataset Replied, post #63 · Data & Tools › Datasets · 8 Sep 2025 · 15 likes Limitations of datasets: all community-collected data has limitations. The population is self-selected (people in this community are not representative of all people…
Confounding by indication, explained with a concrete example Replied, post #20 · Evidence › Study critique · 2 Sep 2025 · 4 likes Building consensus on which criticisms matter: if everyone agrees that the sample size is small but only you think that affects the conclusion, maybe your criticism is…
Pages past their review date, listed Replied, post #22 · Meta › Wiki maintenance · 25 Aug 2025 · 0 likes Outdated external links: if a maintained page links to external sources and those links are broken or pages have moved, reporting that helps keep the page current.
Tirzepatide molecular mass and the charge states you would expect on ESI Replied, post #11 · Compounds › Tirzepatide · 25 Aug 2025 · 0 likes post #10 answers the question as asked. The question underneath it is different. The 2.5 mg starting dose is not a therapeutic dose in the sense that weight loss is…
Coming back to: What published stability data actually covers, and what it does not Replied, post #120 · Practice › Storage & stability · 22 Aug 2025 · 6 likes post #119 is right about the mechanism and I think understates the practical bit. I disagree with the reply above, and I think the disagreement is substantive rather…
[2026 update] Journal club: is percentage weight change the right endpoint? Replied, post #72 · Evidence › Journal club · 20 Aug 2025 · 0 likes post #71 answers the question as asked. The question underneath it is different. For anyone arriving from a search: the marked solution above is the direct answer, and…
[2026 update] Journal club: is percentage weight change the right endpoint? Replied, post #36 · Evidence › Journal club · 14 Aug 2025 · 1 like I disagree with the reply above, and I think the disagreement is substantive rather than terminological. The distinction being drawn does not survive when you look at…
Revisiting: Why a compound being unapproved is not the same as being illegal to possess Replied, post #75 · Sourcing › Regulatory · 10 Aug 2025 · 18 likes I read post #73 twice before replying, because I had assumed the opposite. Preclinical versus clinical: compounds with strong preclinical data can fail in clinical…
Second pass at: Why this subcategory is stricter about sourcing than most Replied, post #39 · Compounds › Secretagogues & GH axis · 6 Aug 2025 · 28 likes Pulsatile secretion matters because growth hormone is secreted in pulses, not continuously. A single post-dose growth hormone level is nearly uninterpretable. Assessing…
"Greater than or equal to 99%" as a specification rather than a result Replied, post #12 · Analytics › COA interpretation · 27 Jul 2025 · 8 likes On post #8 — agreed on the reasoning, with one qualification. What fields matter on a certificate: lot number matching the vial, test date, the analytical method stated…
TB-500 and thymosin beta-4: the fragment versus the protein Replied, post #75 · Compounds › Repair & healing peptides · 20 Jul 2025 · 0 likes Picking up post #72: that is the part I would want checked first. Stability of BPC-157 in solution: what has been measured in published work covers specific…
Revisiting: Why a compound being unapproved is not the same as being illegal to possess Replied, post #31 · Sourcing › Regulatory · 22 Jun 2025 · 23 likes Regulatory positions change: a compound's status today might differ from its status a year from now. Citing a regulatory position is worth doing only with a date…
Sodium, potassium and magnesium when intake drops Replied, post #23 · Nutrition & Training › Hydration & electrolytes · 20 Jun 2025 · 24 likes This follows post #20 rather than contradicting it. Fluid intake: baseline needs increase with gastrointestinal effects and exercise. Thirst is not a reliable guide…
About the Contraindications category Replied, post #4 · Safety › Contraindications · 23 May 2025 · 8 likes Suggestion for the wiki post above: it would be worth linking the two or three most-referenced topics in this category directly, since new members reliably ask for…
Promotion criteria, and the one that stops most nominations — the long version Replied, post #4 · Documentation › Doc review · 21 May 2025 · 1 like New maintainer recruitment: if a page's maintainer is inactive and updates are needed, suggesting a new maintainer here can help transition responsibility.
Tirzepatide in type 2 diabetes: the SURPASS programme, summarised honestly Replied, post #89 · Compounds › Tirzepatide · 20 May 2025 · 25 likes The GIP component: GIP receptor agonism is thought to amplify the GLP-1 effect on satiety and energy expenditure, but how much of tirzepatide's effect is that and how…
Pregnancy as an absolute contraindication Replied, post #45 · Safety › Contraindications · 18 May 2025 · 33 likes Severe renal impairment (eGFR
A supplier that answers analytical questions with restated claims Replied, post #77 · Sourcing › Red flags · 16 May 2025 · 3 likes Worth separating two things that post #73 runs together. Inconsistency across documents: a certificate stating one purity, a website claiming another, and a supplier's…
Excipient function in a licensed injectable Replied, post #6 · Pharmacology › Formulation chemistry · 15 May 2025 · 8 likes post #5 is right about the mechanism and I think understates the practical bit. Lyophilisation and reconstitution: the powder is stable for extended periods if kept…
Journal club: indirect comparison between two programmes, defended and attacked — one… Replied, post #7 · Evidence › Journal club · 10 May 2025 · 0 likes SURPASS-2 (N Engl J Med 2021): Direct comparison of tirzepatide with semaglutide 1.0 mg. The 1.0 mg dose is not the highest available, which is the central and…
Ipamorelin selectivity claims and where they came from Replied, post #36 · Compounds › Secretagogues & GH axis · 10 May 2025 · 1 like On post #32 — agreed on the reasoning, with one qualification. What a well-designed human trial of a secretagogue would look like: randomised, placebo-controlled,…
Second pass at: Journal club: STEP 4 and what a withdrawal design can prove Replied, post #17 · Evidence › Journal club · 9 May 2025 · 3 likes SURMOUNT-OSA (N Engl J Med 2024): Tirzepatide in obstructive sleep apnoea, using an objective physiological endpoint. Notable because soft endpoints are avoided. Two…
Journal club: SURMOUNT-4 and continuation versus withdrawal — a second dataset Replied, post #22 · Evidence › Journal club · 26 Apr 2025 · 0 likes SURMOUNT-OSA (N Engl J Med 2024): Tirzepatide in obstructive sleep apnoea, using an objective physiological endpoint. Notable because soft endpoints are avoided. Two…
Counter-ion content and its effect on measured mass Replied, post #24 · Analytics › Mass spectrometry · 24 Apr 2025 · 25 likes I read post #22 twice before replying, because I had assumed the opposite. Resolution: "high resolution" commonly means
Journal club: STEP 1 and the treatment-policy estimand — does this still hold? Replied, post #121 · Evidence › Journal club · 22 Apr 2025 · 1 like On post #117 — agreed on the reasoning, with one qualification. SOUL (N Engl J Med 2025): Oral semaglutide cardiovascular outcomes. Extends the cardiovascular evidence…
Antibiotics and a course of something with delayed emptying Replied, post #24 · Practice › Interactions · 20 Apr 2025 · 15 likes post #23 answers the question as asked. The question underneath it is different. Thank you for the correction. I have edited my earlier post with a note rather than…
UK access routes, dated and sourced — a second dataset Replied, post #66 · Regional › UK & Ireland · 19 Apr 2025 · 15 likes Private prescribing is legal and widespread, including through remote consultation. Pharmacies must satisfy themselves that a prescription is clinically appropriate.…
A well-designed study with a badly written abstract Replied, post #22 · Evidence › Study critique · 13 Apr 2025 · 29 likes I read post #20 twice before replying, because I had assumed the opposite. Practical note that does not fit anywhere else. Whatever you conclude from this topic, write…
Filing a first vendor report: a worked example Replied, post #5 · Sourcing › Vendor reports · 13 Apr 2025 · 3 likes Worth separating two things that the opening post runs together. Multiple services on one lot: agreement across two independent laboratories is stronger than a high…
Second pass at: Manufacturer assistance programmes and their eligibility rules Replied, post #16 · Access › Pricing · 21 Mar 2025 · 7 likes Subscription services and subscriptions: some online clinics bundle compounds into subscription models with different pricing. Understanding the terms before committing…
Second pass at: Cross-border purchase within the EU: the actual rules Replied, post #113 · Access › International · 21 Mar 2025 · 1 like post #112 is right about the mechanism and I think understates the practical bit. For anyone arriving from a search: the marked solution above is the direct answer, and…
Maintainer handover: how it works Replied, post #25 · Meta › Wiki maintenance · 14 Mar 2025 · 11 likes post #24 answers the question as asked. The question underneath it is different. Cross-referencing: if two pages should reference each other but do not, suggesting the…
Reading an MS report that only gives you a single number Replied, post #28 · Analytics › Mass spectrometry · 13 Mar 2025 · 0 likes Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather than quietly editing. The correction was fair and I had…
A 5 mg vial and a 0.25 mg dose: the arithmetic in full — the long version Replied, post #53 · Practice › Reconstitution · 13 Mar 2025 · 32 likes Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather than quietly editing. The correction was fair and I had…
Pharmaceutical compounding rules, summarised from primary sources Replied, post #108 · Sourcing › Regulatory · 4 Mar 2025 · 0 likes On post #104 — agreed on the reasoning, with one qualification. Preclinical versus clinical: compounds with strong preclinical data can fail in clinical trials.…
A supplier that answers analytical questions with restated claims Replied, post #33 · Sourcing › Red flags · 3 Mar 2025 · 5 likes Worth separating two things that post #29 runs together. Two things before anyone answers the substance. First, the context in the first post is clear and specific.…
Journal club: SURMOUNT-1, read without the press release Replied, post #70 · Evidence › Journal club · 2 Mar 2025 · 13 likes For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add the caveats that make it safe to use.
Validating a method you did not develop — does this still hold? Replied, post #58 · Analytics › Method validation · 1 Mar 2025 · 6 likes Coming back to post #56, because the follow-up matters more than the original answer. Precision and repeatability: within-run and between-run variability of the method.…
Pharmaceutical compounding rules, summarised from primary sources Replied, post #15 · Sourcing › Regulatory · 27 Feb 2025 · 0 likes Compounding and pharmacy rules: some jurisdictions allow a pharmacy to compound a drug that is not on the market under specific conditions. The conditions are strict…
Distinguishing a deletion sequence by mass alone Replied, post #125 · Analytics › Mass spectrometry · 23 Feb 2025 · 28 likes Tandem mass spectrometry: MS/MS fragments the molecular ion and uses fragment masses to confirm identity and detect modifications. A simple identity confirmation by…
Follow-up: What other technical communities get right that we do not Replied, post #23 · Lounge › Off topic · 22 Feb 2025 · 31 likes I read post #21 twice before replying, because I had assumed the opposite. Newer drugs and mechanisms: when a new drug launches or a new mechanism is discovered, the…
Biased agonism: a real phenomenon, an over-used explanation — what changed since Replied, post #55 · Pharmacology › Receptor biology · 18 Feb 2025 · 29 likes Picking up post #52: that is the part I would want checked first. Amylin receptor signalling: amylin promotes satiety and slows gastric emptying through a receptor…
What changed in 2026, by region Replied, post #120 · Access › International · 4 Feb 2025 · 12 likes Country-by-country legality: compound approval and legal status differ substantially by jurisdiction. Semaglutide approved in the United States and European Union;…
Scheduled maintenance and what will be unavailable Replied, post #14 · Meta › Announcements · 13 Jan 2025 · 10 likes I read post #12 twice before replying, because I had assumed the opposite. Staff announcements, policy changes, and scheduled maintenance. Read-only except for…
Recovery when intake is low: what to cut first Replied, post #12 · Nutrition & Training › Resistance training · 9 Jan 2025 · 7 likes Recovery: heavier training on a energy deficit and on a compound that slows gastric emptying requires attention to recovery (sleep, nutrition, stress). Recovery…
Coming back to: Grapefruit: why this class is not the class that cares Replied, post #45 · Practice › Interactions · 5 Jan 2025 · 1 like post #44 answers the question as asked. The question underneath it is different. Oral medications versus time: if you take an oral medication 30 minutes before…
A promotion I argued against, and why I lost Replied, post #50 · Documentation › Doc review · 4 Jan 2025 · 13 likes Citation checking: if a maintained page cites a paper, the citation should match what the paper actually says. If you notice a mismatch, post it here.
Amylin analogue mechanism: satiety signalling separate from GLP-1 Replied, post #44 · Compounds › Cagrilintide & amylin analogues · 2 Jan 2025 · 0 likes Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the…
Second pass at: A field-by-field walk through a certificate of analysis Replied, post #163 · Analytics › COA interpretation · 24 Dec 2024 · 17 likes I disagree with the reply above, and I think the disagreement is substantive rather than terminological. The distinction being drawn does not survive when you look at…
Coming back to: When to suspect the method rather than the sample Replied, post #119 · Analytics › Method validation · 23 Dec 2024 · 0 likes Coming back to post #117, because the follow-up matters more than the original answer. Limits of detection and quantitation: LOD is the lowest concentration that…
Identical chromatograms across two different lots Replied, post #65 · Sourcing › Red flags · 21 Dec 2024 · 23 likes Documentation quality as a signal: a supplier that reports method identifiers, distinguishes specification from result, and states the counter-ion form is telling you…
Body image changing more slowly than the body Replied, post #52 · Wellbeing › Mental health · 17 Dec 2024 · 0 likes Practical note that does not fit anywhere else. Whatever you conclude from this topic, write down what you did and when. The single most useful thing in your own…
Revisiting: Moderation log format change Replied, post #71 · Meta › Announcements · 16 Dec 2024 · 1 like Staff announcements, policy changes, and scheduled maintenance. Read-only except for questions clarifying what was announced.
Biased agonism: a real phenomenon, an over-used explanation — what changed since Replied, post #4 · Pharmacology › Receptor biology · 12 Dec 2024 · 17 likes Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the…
[2026 update] Step therapy requirements and how to satisfy them Replied, post #64 · Access › Insurance & coverage · 11 Dec 2024 · 3 likes Picking up post #61: that is the part I would want checked first. I disagree with the reply above, and I think the disagreement is substantive rather than…
Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #5 · Data & Tools › Calculators · 27 Nov 2024 · 2 likes I read post #3 twice before replying, because I had assumed the opposite. Units: all calculators explicitly require units to be stated. This prevents the decimal-point…
Tracking semaglutide's approved indications across jurisdictions, dated — does this… Replied, post #34 · Compounds › Semaglutide · 20 Nov 2024 · 18 likes Is there a ceiling dose beyond which the effect plateaus? The trials did not study that because they stopped at 2.4 mg. Some people report trying higher doses, but…
EMA product information as a primary source — does this still hold? Replied, post #151 · Regional › European Union · 19 Nov 2024 · 21 likes On post #147 — agreed on the reasoning, with one qualification. Reimbursement varies substantially by member state. Some (Germany, France, Netherlands) restrict…
EMA product information as a primary source — does this still hold? Replied, post #52 · Regional › European Union · 16 Nov 2024 · 8 likes Coming back to post #50, because the follow-up matters more than the original answer. Cross-border purchase rules: buying a prescription in one EU country and bringing…
Time to steady state after a dose increase Replied, post #129 · Pharmacology › Pharmacokinetics · 5 Nov 2024 · 0 likes Worth separating two things that post #125 runs together. Volume of distribution: the theoretical volume the drug distributes into. For albumin-binding compounds,…
Gallbladder disease risk with rapid weight loss Replied, post #27 · Clinical › Comorbidities · 4 Nov 2024 · 0 likes Obstructive sleep apnoea: SURMOUNT-OSA used an objective endpoint, the apnoea-hypopnoea index. Reduction was substantial. Whether the benefit is weight loss or a direct…
Promotion criteria, and the one that stops most nominations Replied, post #95 · Documentation › Doc review · 25 Oct 2024 · 3 likes Picking up post #92: that is the part I would want checked first. Multilingual versions: if a maintained page should exist in another language, suggesting it here with…
High-resolution MS on aggregates and what it can see — one year on Replied, post #58 · Analytics › Mass spectrometry · 21 Aug 2024 · 1 like What mass accuracy establishes: the measured mass is consistent with a specific composition. What it does not establish: purity, sequence order, stereochemistry, or the…
Blind submission and why it changes minds Replied, post #33 · Sourcing › Independent verification · 10 Aug 2024 · 3 likes This follows post #30 rather than contradicting it. For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add…
Guidelines revision: what changed and why Replied, post #94 · Meta › Announcements · 27 Jul 2024 · 23 likes Coming back to post #92, because the follow-up matters more than the original answer. Staff-only posts: some announcements are visible only to staff (concerning…
Guidelines revision: what changed and why Replied, post #75 · Meta › Announcements · 27 Jul 2024 · 19 likes When announcements are made: major policy changes, technical changes affecting site function, planned downtime, and changes to guidelines all get announced here.
The mass-error checker and its intended scope Replied, post #67 · Data & Tools › Calculators · 22 Jun 2024 · 14 likes The calculators maintained on this site are open-source and verifiable. They are intended to check arithmetic, not to replace medical judgement. Using them is optional…