c.inglethorpe

TL3 Regular · Zürich, CH

Pharmacist. Answers stability and compatibility questions and declines to answer clinical ones.

Joined 18 January 2025 · last posted 1d · groups: pharmacists

121 posts, newest first. Showing up to 150.

[2026 update] Second opinions: how to seek one without burning the first Replied, post #3 · Clinical › Prescriber conversations · 26 Jul 2026 · 29 likes Asking about monitoring: understand what lab work will be done, how often, and what you will be monitored for. A plan is better than ad-hoc monitoring.
PIONEER 6 cardiovascular safety, read as a safety trial rather than an efficacy one Replied, post #24 · Compounds › Oral incretins · 25 Jul 2026 · 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…
Seven-day rolling means and why weekly readings mislead Replied, post #80 · Outcomes › Progress reports · 22 Jul 2026 · 1 like Menstrual cycle: for people who menstruate, weight can shift by several pounds across the cycle due to fluid retention and other factors. Noting cycle phase when…
Publication patterns in the BPC-157 literature, examined Replied, post #41 · Compounds › Repair & healing peptides · 21 Jul 2026 · 6 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…
Journal club: SUSTAIN 6 and its retinopathy signal Replied, post #91 · Evidence › Journal club · 20 Jul 2026 · 1 like Worth separating two things that post #87 runs together. SURMOUNT-1 (N Engl J Med 2022): Tirzepatide obesity trial. The largest mean weight reduction for a…
Angle of injection and whether 90 degrees is always right — the long version Replied, post #49 · Practice › Administration · 18 Jul 2026 · 0 likes Leak-back after withdrawal: a small amount of liquid on the skin after withdrawal is ordinary. Whether you lost a "meaningful" dose depends on concentration and your…
Pages past their review date, listed — does this still hold? Replied, post #54 · Meta › Wiki maintenance · 15 Jul 2026 · 17 likes This follows post #51 rather than contradicting it. Cross-referencing: if two pages should reference each other but do not, suggesting the cross-reference helps the…
Revisiting: Why the absence of controlled human data on BPC-157 matters more than people… Replied, post #31 · Compounds › Repair & healing peptides · 14 Jul 2026 · 0 likes What would change the position on repair peptides: adequately powered, published, peer-reviewed randomised controlled human trials with pre-specified outcomes. That is…
Molecular mass of semaglutide and why the figure differs between sources Replied, post #100 · Compounds › Semaglutide · 13 Jul 2026 · 33 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…
Journal club: what we got wrong in an earlier session Replied, post #69 · Evidence › Journal club · 10 Jul 2026 · 22 likes post #68 answers the question as asked. The question underneath it is different. I disagree with the reply above, and I think the disagreement is substantive rather…
Why 99.2% and 97.8% on the same lot can both be correct Replied, post #16 · Analytics › HPLC & UHPLC · 8 Jul 2026 · 16 likes Worth separating two things that post #12 runs together. Reversed-phase separates on hydrophobicity. A peptide is retained on a non-polar stationary phase and eluted by…
Second pass at: Absence of evidence and evidence of absence Replied, post #39 · Research Methods › Statistics · 7 Jul 2026 · 0 likes I read post #37 twice before replying, because I had assumed the opposite. Relative risk and odds ratios: both compare the rate in one group to the rate in another.…
Primary endpoint hierarchies and why order matters — one year on Replied, post #35 · Evidence › Trials · 4 Jul 2026 · 8 likes Multiplicity and multiple comparisons: if a trial tests many hypotheses, the chance of a false positive on at least one by random chance increases. This is why…
How to ask a question when you cannot say why you are asking it Replied, post #29 · Start Here › How to Ask · 3 Jul 2026 · 23 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…
Alcohol: what is documented and what is folklore Replied, post #86 · Practice › Interactions · 1 Jul 2026 · 17 likes Worth separating two things that post #82 runs together. Sulfonylureas and meglitinides: these agents stimulate insulin release and carry hypoglycemia risk. Combining…
A structured critique template this community uses — a second dataset Replied, post #24 · Evidence › Study critique · 30 Jun 2026 · 0 likes When you change your mind: if a reply convinces you that your criticism was not well-founded, say so plainly. The critique might still be real but smaller than you…
Insurance and replacement policies, compared Replied, post #47 · Sourcing › Logistics · 27 Jun 2026 · 0 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…
Follow-up: Prior authorisation: what the criteria usually require Replied, post #40 · Access › Insurance & coverage · 26 Jun 2026 · 3 likes Reimbursement changes: a compound covered one year might not be the next. A formulary decision in January can change by April. Checking again before refilling saves…
Journal club: indirect comparison between two programmes, defended and attacked Replied, post #98 · Evidence › Journal club · 26 Jun 2026 · 25 likes Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can…
Lean mass preservation: what the evidence supports — does this still hold? Replied, post #100 · Outcomes › Body composition · 22 Jun 2026 · 29 likes post #99 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…
Request: tag synonyms surfaced in search Replied, post #4 · Meta › Feature requests · 21 Jun 2026 · 28 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…
[2026 update] Interpreting a result that disagrees with the supplier's certificate Replied, post #29 · Sourcing › Independent verification · 20 Jun 2026 · 5 likes PeptideMeter: purity analysis plus structured, dated supplier verification records. Produces both individual analytical results and verification records assessed over…
What TRIUMPH is designed to answer, and why we should not pre-empt it Replied, post #3 · Compounds › Retatrutide · 15 Jun 2026 · 17 likes Coming back to the opening post, because the follow-up matters more than the original answer. Two things before anyone answers the substance. First, the context in the…
Ultrasound and skinfolds: operator dependence in practice Replied, post #9 · Outcomes › Body composition · 7 Jun 2026 · 5 likes Ultrasound: thickness of subcutaneous fat at specific sites. Less standardised than DXA and operator-dependent. Useful as a supplementary measure but not as a primary…
A certificate whose chromatogram axes do not match its stated method — one year on Started this topic · Sourcing › Red flags · 2 Jun 2026 · 32 likes A certificate whose chromatogram axes do not match its stated method — one year on Writing it up because I had to work it out twice and would rather nobody else did.…
A reconstituted vial's beyond-use date and the reasoning behind common figures Replied, post #8 · Practice › Storage & stability · 1 Jun 2026 · 9 likes Coming back to post #6, because the follow-up matters more than the original answer. Freeze-thaw: some peptide solutions tolerate freezing poorly because ice crystals…
The best-written scientific paper you have read Replied, post #63 · Lounge › Off topic · 24 May 2026 · 0 likes Humour: light, relevant humour is welcome. Cruel humour targeting individuals or groups is not.
Why the absence of controlled human data on BPC-157 matters more than people admit Replied, post #28 · Compounds › Repair & healing peptides · 19 May 2026 · 17 likes Worth separating two things that post #24 runs together. TB-500 is usually the 7-residue actin-binding fragment of thymosin beta-4, not the full 43-residue protein. The…
[2026 update] Thyroid function tests during substantial weight change Replied, post #63 · Clinical › Bloodwork · 10 May 2026 · 0 likes Renal function markers: eGFR is estimated, not measured. It depends on creatinine, age, and weight. A small change in creatinine might not mean a real change in kidney…
Request: show the solution author in the topic list — what changed since Replied, post #85 · Meta › Feature requests · 4 May 2026 · 0 likes Community support: if other people support your request, they can reply with "+1" or "I would use that too". Widely-requested features are prioritised.
Coming back to: Measurement error in a self-reported exposure Replied, post #13 · Evidence › Study critique · 23 Apr 2026 · 3 likes post #12 answers the question as asked. The question underneath it is different. Criticise the method, not the author: a paper with a weak design is not a bad paper by…
Follow-up: Sleep quality changes during weight loss Replied, post #8 · Wellbeing › Sleep · 21 Apr 2026 · 0 likes Worth separating two things that post #4 runs together. Stimulants and sleep: if supplementing with caffeine or other stimulants for energy during weight loss, timing…
Coming back to: Washout: how long is long enough, and for what purpose Replied, post #112 · Pharmacology › Pharmacokinetics · 20 Apr 2026 · 24 likes Albumin binding: semaglutide binds albumin through a fatty side chain, which sequesters the free form and extends the half-life. Tirzepatide also has albumin binding…
Prescription portability between countries Replied, post #4 · Access › International · 8 Apr 2026 · 4 likes post #2 answers the question as asked. The question underneath it is different. Regulatory position dates: a regulatory position is only current as of when it was…
Spike-and-recover accuracy for a peptide assay Replied, post #26 · Analytics › Method validation · 7 Apr 2026 · 31 likes I read post #24 twice before replying, because I had assumed the opposite. Why two laboratories may disagree: after validating the same method, they may still report…
Subgroup analyses: pre-specified versus discovered — a second dataset Replied, post #30 · Evidence › Trials · 3 Apr 2026 · 10 likes Worth separating two things that post #26 runs together. Surrogate endpoints: an endpoint that is not the outcome that matters but is measured as a stand-in. HbA1c is a…
How to ask about something you suspect is a bad idea Replied, post #72 · Start Here › How to Ask · 2 Apr 2026 · 0 likes On post #68 — agreed on the reasoning, with one qualification. Lab result questions: state the result, the reference interval, and what else is on the same panel. A…
Bug report: the reconstitution calculator and a rounding edge case Replied, post #8 · Data & Tools › Calculators · 1 Apr 2026 · 5 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…
Completing a dose with a second syringe, and the dead-volume arithmetic Replied, post #21 · Practice › Administration · 30 Mar 2026 · 5 likes This follows post #18 rather than contradicting it. Cold solution and stinging: warming the vial in your hands for a minute before injection reduces the stinging…
Citation sweep results: how many references did not say what was claimed Replied, post #69 · Meta › Wiki maintenance · 30 Mar 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.
Second pass at: Identical chromatograms across two different lots Replied, post #90 · Sourcing › Red flags · 24 Mar 2026 · 7 likes Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can…
Which fields on a certificate actually matter, ranked Replied, post #22 · Analytics › COA interpretation · 17 Mar 2026 · 1 like Counter-ion form is crucial: peptides are isolated as salts, most often trifluoroacetate from reversed-phase purification or acetate after salt exchange. The…
Managing an unplanned gap in supply Replied, post #59 · Access › Shortages · 13 Mar 2026 · 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…
Recording a dissent on a document rather than suppressing it Replied, post #7 · Documentation › Doc review · 9 Mar 2026 · 1 like I read post #5 twice before replying, because I had assumed the opposite. New maintainer recruitment: if a page's maintainer is inactive and updates are needed,…
Subgroup analyses: pre-specified versus discovered — a second dataset Replied, post #3 · Evidence › Trials · 6 Mar 2026 · 0 likes post #2 answers the question as asked. The question underneath it is different. Open-label design: unblinded trials admit expectation effects. For weight-loss trials…
Reading a syringe in poor light, and how to avoid needing to — what changed since Replied, post #2 · Devices › Syringes & needles · 23 Feb 2026 · 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…
Mass error in ppm: the arithmetic and the caveat Replied, post #2 · Analytics › Mass spectrometry · 11 Feb 2026 · 2 likes Quantitation by MS: most quantitation is done by LC-UV detection at 214 nm, not by MS, because extinction coefficients are better known. MS can quantify if an internal…
Waist circumference technique and its repeatability Replied, post #49 · Outcomes › Progress reports · 9 Feb 2026 · 32 likes On post #45 — agreed on the reasoning, with one qualification. Practical note that does not fit anywhere else. Whatever you conclude from this topic, write down what…
A plateau that disappeared when I changed how I measured Replied, post #13 · Outcomes › Progress reports · 4 Feb 2026 · 0 likes Non-scale victories: muscle gain or maintenance, clothing fit, energy level, and capability (like climbing stairs without breathlessness) are measurements that…
Research-use-only labelling: what it means and what it does not Replied, post #83 · Sourcing › Regulatory · 5 Jan 2026 · 7 likes Picking up post #80: that is the part I would want checked first. Primary documents matter: regulatory positions are published in official documents. Reading the…
Oral semaglutide bioavailability and its variability between people Replied, post #25 · Compounds › Oral incretins · 2 Jan 2026 · 8 likes This follows post #22 rather than contradicting it. Oral versus injectable exposure: comparing a 14 mg oral dose with a 0.5 mg injectable dose is comparing apples to a…
Follow-up: A supplier that answers analytical questions with restated claims Replied, post #33 · Sourcing › Red flags · 31 Dec 2025 · 0 likes Rapid supplier turnover: a supplier that changes corporate structure, domain name, or contact repeatedly in short time windows raises suspicion about stability and…
Follow-up: Evidence quality in the secretagogue literature: an honest assessment Replied, post #5 · Compounds › Secretagogues & GH axis · 27 Dec 2025 · 25 likes Picking up post #2: that is the part I would want checked first. CJC-1295 with and without DAC: the version with a drug affinity complex binds albumin covalently and…
Pregnancy and pregnancy planning: contraindication and washout Started this topic · Clinical › Special populations · 24 Dec 2025 · 4 likes Posting this under the heading it deserves: Pregnancy and pregnancy planning: contraindication and washout Everything below is what sits behind that. General question,…
Request: a diff view for wiki revisions — the long version Replied, post #88 · Meta › Feature requests · 23 Dec 2025 · 15 likes Tracking: staff will update the status of feature requests (under consideration, planned, implemented, declined). Checking back lets you know the fate of your suggestion.
Price changes over 2025 and 2026, tabulated and dated — does this still hold? Replied, post #43 · Access › Pricing · 22 Dec 2025 · 0 likes On post #39 — agreed on the reasoning, with one qualification. Cost per milligram is the only comparison that survives format differences, but even then it needs care.…
Guidelines revision: what changed and why — one year on Replied, post #48 · Meta › Announcements · 19 Dec 2025 · 3 likes On post #44 — agreed on the reasoning, with one qualification. Questions welcomed: if an announcement is unclear, asking for clarification is welcome. Staff will…
Semaglutide half-life: where the 165 to 184 hour figure comes from Replied, post #66 · Compounds › Semaglutide · 10 Dec 2025 · 9 likes Albumin binding is not a unique structural feature and nothing in the class lacks it, but the reversibility matters. Semaglutide binds albumin covalently through a…
Tracking a preprint to publication: a worked example Replied, post #48 · Evidence › Preprints · 4 Dec 2025 · 15 likes post #47 answers the question as asked. The question underneath it is different. Discussing preprints in this community: bring them in for early discussion, label them…
A history of disordered eating: proceeding carefully Replied, post #19 · Wellbeing › Mental health · 3 Dec 2025 · 6 likes post #18 is right about the mechanism and I think understates the practical bit. Social and relationship impacts: weight change affects how others perceive and interact…
Severe gastroparesis and why this class is a poor fit — one year on Replied, post #13 · Safety › Contraindications · 28 Nov 2025 · 30 likes post #12 answers the question as asked. The question underneath it is different. Severe renal impairment (eGFR
[2026 update] How much of the diluent volume the powder itself displaces Replied, post #73 · Practice › Reconstitution · 26 Nov 2025 · 7 likes Foaming during reconstitution: bubbles in the solution are usually just air incorporated during mixing. They usually resolve with gentle warming and time. Persistent…
Sequence verification for an obscure compound: how it is done — what changed since Replied, post #54 · Compounds › Other compounds · 24 Nov 2025 · 0 likes Distinguishing marketed research compounds from true chemical synthesis: some online suppliers sell compounds that are genuinely novel and difficult to obtain…
How to ask about something you suspect is a bad idea Replied, post #25 · Start Here › How to Ask · 15 Nov 2025 · 0 likes I read post #23 twice before replying, because I had assumed the opposite. The specific question in the title is more useful than you might think. A title like "a…
How to read a phase 2 result without treating it as a phase 3 result — what changed since Replied, post #16 · Compounds › Retatrutide · 14 Nov 2025 · 27 likes Triple agonism: is the effect additive, synergistic, or neither? A phase 2 comparison of tirzepatide (dual) to retatrutide (triple) would answer that question. The…
Thyroid function tests during substantial weight change Replied, post #127 · Clinical › Bloodwork · 9 Nov 2025 · 0 likes Reference intervals: constructed to contain the central 95% of a reference population, which means one in twenty healthy people falls outside one by definition. Add…
Second pass at: How to ask a question when you cannot say why you are asking it Replied, post #30 · Start Here › How to Ask · 7 Nov 2025 · 0 likes Picking up post #27: that is the part I would want checked first. Arithmetic questions: write out the steps. "I have a 10 mg vial, I added 2 mL, I want a 0.25 mg dose,…
[2026 update] Are there stupid questions here? A staff answer, at length Replied, post #7 · Start Here › Welcome · 4 Nov 2025 · 1 like Introducing yourself is fine and requires no question. Post in this subcategory, describe the context that matters for why you are here, and lurk for a bit before…
The headache that turns out to be dehydration Replied, post #27 · Nutrition & Training › Hydration & electrolytes · 18 Oct 2025 · 0 likes Coming back to post #25, because the follow-up matters more than the original answer. Water intoxication: drinking excessive water (more than a few liters per day for…
Specificity, linearity, accuracy, precision, range, robustness — with real criteria — a… Replied, post #33 · Analytics › Method validation · 18 Oct 2025 · 1 like Forced degradation studies: deliberately stress the material with acid, base, oxidant, heat, light to generate degradation products and demonstrate that the method can…
Publishing an inconvenient result: a case study — the long version Replied, post #10 · Sourcing › Independent verification · 15 Oct 2025 · 1 like When results are inconclusive: if a testing service reports "insufficient to verify" on a documentation review, that is not a negative finding about the product. It…
A parcel that arrived warm: a decision process, not a verdict Replied, post #59 · Practice › Storage & stability · 29 Sep 2025 · 3 likes Dating prepared solutions: write the date reconstitution on the vial in permanent marker. If you later need to know whether it has been sitting for weeks or days, the…
What a purity-only report leaves out Replied, post #28 · Sourcing › Independent verification · 28 Sep 2025 · 0 likes Service differences on vendor pages: Janoshik and Medutest results are measurements on vials. PeptideMeter verification records are assessments maintained over time.…
Reading SURMOUNT-1 without the press release — one year on Replied, post #8 · marked as the solution · Compounds › Tirzepatide · 14 Sep 2025 · 24 likes post #7 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 than…
Documenting an adverse event properly Replied, post #8 · Safety › Adverse events · 14 Sep 2025 · 11 likes Psychological adverse events: mood changes, anxiety, or suicidal ideation warrant discussion with a mental health professional. These are rare but real.
Why catalogue breadth is not evidence of anything — what changed since Replied, post #31 · Compounds › Other compounds · 30 Aug 2025 · 13 likes 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…
Follow-up: Journal club: orforglipron phase 2 and the non-peptide question Replied, post #31 · Evidence › Journal club · 19 Aug 2025 · 19 likes On post #27 — agreed on the reasoning, with one qualification. STEP 1 (N Engl J Med 2021): The pivotal obesity trial for semaglutide and the reference point for most…
Revisiting: Filing a first vendor report: a worked example Replied, post #3 · Sourcing › Vendor reports · 19 Aug 2025 · 27 likes post #2 answers the question as asked. The question underneath it is different. Lot matching: confirm the lot number on the certificate matches the lot number on the…
Revisiting: List price versus negotiated price versus what you pay Replied, post #25 · Access › Pricing · 10 Aug 2025 · 32 likes Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can…
What this community means by "a source", in practical terms Replied, post #64 · Start Here › Welcome · 9 Aug 2025 · 12 likes Introducing yourself is fine and requires no question. Post in this subcategory, describe the context that matters for why you are here, and lurk for a bit before…
[2026 update] An appeal that failed, and what I would do differently Replied, post #140 · Access › Insurance & coverage · 16 Jun 2025 · 7 likes Prior authorisation: pre-approval requirements and how to satisfy them. Most denials cite specific criteria. Understanding the criterion is the first step in satisfying…
Risk-of-bias tools and the judgement they conceal Replied, post #5 · Evidence › Meta-analyses · 15 Jun 2025 · 0 likes Pooled estimates and heterogeneity: when trials differ in population, duration, or comparator, a pooled estimate answers a question that no individual trial asked. High…
A well-designed study with a badly written abstract Replied, post #121 · Evidence › Study critique · 1 Jun 2025 · 0 likes Choosing the worst interpretation: "The confidence interval includes a harmful effect" is true if the CI goes from -1 to +5. But assuming the worst-case scenario is not…
[2026 update] Clearance pathways and what renal impairment changes Replied, post #17 · Pharmacology › Pharmacokinetics · 27 May 2025 · 9 likes Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can…
Reading a rodent study on a secretagogue without over-extrapolating Replied, post #9 · Compounds › Secretagogues & GH axis · 24 May 2025 · 0 likes post #8 answers the question as asked. The question underneath it is different. Pulsatile secretion matters because growth hormone is secreted in pulses, not…
Follow-up: The decimal-point error, and the habit that catches it Replied, post #3 · Practice › Reconstitution · 22 May 2025 · 0 likes A 10 mg vial reconstituted three different ways: 1 mL diluent gives 10 mg/mL, 2 mL gives 5 mg/mL, 4 mL gives roughly 2.5 mg/mL. The arithmetic is the same; the…
How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ Replied, post #125 · Sourcing › Independent verification · 20 May 2025 · 14 likes Picking up post #122: that is the part I would want checked first. Thank you for the correction. I have edited my earlier post with a note rather than silently, so the…
Cost per milligram, computed honestly across formats — the long version Replied, post #100 · Access › Pricing · 14 May 2025 · 26 likes Worth separating two things that post #96 runs together. List prices versus negotiated prices: the price a pharmaceutical company publishes and the price an insurance…
Why one laboratory's 98.4% and another's 96.1% may not contradict Replied, post #6 · Analytics › Method validation · 11 May 2025 · 1 like Linearity: the detector response is proportional to compound concentration across the working range. Demonstrated by running standards at multiple concentrations and…
Research-use-only labelling: what it means and what it does not — the long version Replied, post #142 · Sourcing › Regulatory · 2 May 2025 · 4 likes Approval versus licensing: a compound can be approved for a specific indication in one country and not approved at all in another. Tracking jurisdictional approval is…
Tirzepatide in type 2 diabetes: the SURPASS programme, summarised honestly Replied, post #73 · Compounds › Tirzepatide · 30 Apr 2025 · 7 likes Storage and stability: published data on licensed tirzepatide formulations exists and is worth reading directly rather than through summarised claims. Reconstituted…
Scheduled maintenance and what will be unavailable Replied, post #125 · Meta › Announcements · 27 Apr 2025 · 30 likes Picking up post #122: that is the part I would want checked first. Scheduled maintenance: if the site is going offline for maintenance, advance notice will be posted…
Follow-up: What other technical communities get right that we do not Replied, post #55 · Lounge › Off topic · 1 Apr 2025 · 0 likes Industry and supply chain: post about manufacturing, pharmaceutical economics, or market dynamics if you have something substantive to contribute.
Ipamorelin selectivity claims and where they came from Replied, post #22 · Compounds › Secretagogues & GH axis · 21 Mar 2025 · 23 likes CJC-1295 with and without DAC: the version with a drug affinity complex binds albumin covalently and persists for days. The version without it does not persist.…
Obstructive sleep apnoea and a hard endpoint in this class Replied, post #37 · Clinical › Comorbidities · 19 Mar 2025 · 21 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…
Second pass at: Cross-border purchase within the EU: the actual rules Replied, post #109 · Access › International · 19 Mar 2025 · 5 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…
Charge states for a 4 kDa peptide, worked through Replied, post #124 · Analytics › Mass spectrometry · 16 Mar 2025 · 0 likes Quantitation by MS: most quantitation is done by LC-UV detection at 214 nm, not by MS, because extinction coefficients are better known. MS can quantify if an internal…
Validating a method you did not develop — does this still hold? Replied, post #48 · Analytics › Method validation · 26 Feb 2025 · 0 likes post #47 is right about the mechanism and I think understates the practical bit. Range: the concentration range over which the method has been validated. Going outside…
A 5 mg vial and a 0.25 mg dose: the arithmetic in full — the long version Replied, post #25 · Practice › Reconstitution · 3 Feb 2025 · 0 likes Over-dilution: if your target dose is 0.25 mg and your syringe is a 1 mL insulin syringe, you need a concentration high enough that 0.25 mg fits on the scale. A 0.25…
Talking to a therapist about this specifically — does this still hold? Replied, post #11 · Wellbeing › Mental health · 30 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…
Revisiting: What a well-designed human trial of a secretagogue would look like Replied, post #49 · Compounds › Secretagogues & GH axis · 25 Jan 2025 · 16 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…
SURPASS-2 and the comparator dose question that will not go away Replied, post #111 · Compounds › Tirzepatide · 22 Jan 2025 · 9 likes On post #107 — agreed on the reasoning, with one qualification. SURPASS-2 compared tirzepatide with semaglutide 1.0 mg, the licensed diabetes dose at that time. It did…
Second pass at: How to research a compound with no human data without deceiving yourself Replied, post #14 · Compounds › Other compounds · 19 Jan 2025 · 10 likes Naming conventions for research peptides cause confusion because suppliers do not follow a standard. The same compound gets different names from different suppliers. If…
Follow-up: Individual participant data versus aggregate data Replied, post #91 · Evidence › Meta-analyses · 11 Jan 2025 · 0 likes Funnel plots: a plot of study effect size versus sample size that helps detect publication bias. If small studies are missing on the negative side, the funnel is…
[2026 update] Journal club: SURPASS-2 and the semaglutide 1 mg comparator Replied, post #76 · Evidence › Journal club · 30 Dec 2024 · 24 likes PIONEER 6 (N Engl J Med 2019): Cardiovascular safety trial for oral semaglutide, not efficacy. Non-inferiority for safety was met. The trial was not designed to…
Revisiting: Semaglutide formulation: what is in the licensed product besides the peptide Replied, post #52 · Compounds › Semaglutide · 28 Dec 2024 · 0 likes Albumin binding is not a unique structural feature and nothing in the class lacks it, but the reversibility matters. Semaglutide binds albumin covalently through a…
Molecular mass of semaglutide and why the figure differs between sources — does this… Replied, post #14 · Compounds › Semaglutide · 19 Dec 2024 · 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.
Follow-up: Tirzepatide's shorter half-life and its one practical consequence Replied, post #95 · Compounds › Tirzepatide · 18 Dec 2024 · 21 likes The 2.5 mg starting dose is not a therapeutic dose in the sense that weight loss is minimal at that dose. It is a tolerance-testing dose. Confusing the purpose of a…
Here for the analytics and not much else — one year on Replied, post #9 · Lounge › Introductions · 17 Dec 2024 · 4 likes This follows post #6 rather than contradicting it. Community culture: introductions give you a sense of who is here. Reading a few introduces you to the people and the…
Body image changing more slowly than the body Replied, post #4 · Wellbeing › Mental health · 10 Dec 2024 · 0 likes Support and community: some people process weight change through community (online or in-person). Others prefer privacy. Knowing what you need and seeking it…
[2026 update] Step therapy requirements and how to satisfy them Replied, post #3 · Access › Insurance & coverage · 23 Oct 2024 · 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…
Promotion criteria, and the one that stops most nominations Replied, post #87 · Documentation › Doc review · 16 Oct 2024 · 22 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…
Follow-up: A site rotation scheme that is easy enough to actually follow Replied, post #70 · Practice › Administration · 1 Oct 2024 · 0 likes post #69 is right about the mechanism and I think understates the practical bit. Angle of injection: 90 degrees into pinched tissue ensures subcutaneous placement. It…
High-resolution MS on aggregates and what it can see — one year on Replied, post #48 · Analytics › Mass spectrometry · 19 Aug 2024 · 23 likes post #47 answers the question as asked. The question underneath it is different. Tandem mass spectrometry: MS/MS fragments the molecular ion and uses fragment masses to…
Circumference measurements as a poor man's composition estimate Replied, post #31 · Outcomes › Body composition · 31 Jul 2024 · 11 likes DXA (dual-energy X-ray absorptiometry): the standard for body composition in research. Precision is roughly ±1 kg for lean mass. Two scans six months apart on the same…
Guidelines revision: what changed and why Replied, post #84 · Meta › Announcements · 27 Jul 2024 · 0 likes post #83 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…
Guidelines revision: what changed and why Replied, post #67 · Meta › Announcements · 27 Jul 2024 · 0 likes I read post #65 twice before replying, because I had assumed the opposite. RSS: if you prefer to receive announcements by feed rather than visiting the site, RSS is…
How to ask for a dose change without antagonising anyone Replied, post #8 · marked as the solution · Clinical › Prescriber conversations · 24 Jul 2024 · 22 likes Asking about monitoring: understand what lab work will be done, how often, and what you will be monitored for. A plan is better than ad-hoc monitoring.
Splitting a weekly dose in two: the pharmacokinetic argument against — the long version Replied, post #62 · Practice › Dosing & titration · 8 Jul 2024 · 1 like I read post #60 twice before replying, because I had assumed the opposite. Two things before anyone answers the substance. First, the context in the first post is clear…
The mass-error checker and its intended scope Replied, post #46 · Data & Tools › Calculators · 12 Jun 2024 · 27 likes Storage lookup: which conditions (temperature, time) are you considering storing in, and how much stability loss is expected? The calculator gives a rough estimate…
The mass-error checker and its intended scope Replied, post #11 · Data & Tools › Calculators · 25 May 2024 · 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.