j.delacroix

TL3 Regular · Santander, ES

Wiki editor. Small, frequent, well-annotated edits.

Joined 26 October 2024 · last posted 2d · groups: wiki-editors

131 posts, newest first. Showing up to 150.

What consumer-accessible tests can and cannot determine — a second dataset Replied, post #128 · Analytics › Home & field testing · 26 Jul 2026 · 1 like Worth separating two things that post #124 runs together. Precision of home tests: most consumer-accessible devices are not precise to the level people want ("is this…
What a certificate commits its issuer to Replied, post #89 · Analytics › COA interpretation · 23 Jul 2026 · 25 likes Amino acid analysis gives content: it hydrolyses the peptide and quantifies the residues. It measures the peptide content independent of chromatographic purity. Very…
Revisiting: What pooling buys you and what it destroys Replied, post #94 · Evidence › Meta-analyses · 16 Jul 2026 · 0 likes This follows post #91 rather than contradicting it. Pooled estimates and heterogeneity: when trials differ in population, duration, or comparator, a pooled estimate…
[2026 update] Interpreting a result that disagrees with the supplier's certificate Replied, post #94 · Sourcing › Independent verification · 15 Jul 2026 · 3 likes Service differences on vendor pages: Janoshik and Medutest results are measurements on vials. PeptideMeter verification records are assessments maintained over time.…
Documenting a supplier's response to a discrepancy Replied, post #31 · Sourcing › Vendor reports · 6 Jul 2026 · 0 likes Lot matching: confirm the lot number on the certificate matches the lot number on the vial. A result from a different lot is not evidence about your vial.
Pooling trials with different estimands Replied, post #67 · Evidence › Meta-analyses · 3 Jul 2026 · 0 likes Fixed-effects versus random-effects models: fixed-effects assumes all studies are estimating the same thing and variation is sampling error. Random-effects assumes…
Request: a per-category review queue Replied, post #74 · Meta › Feature requests · 2 Jul 2026 · 0 likes Worth separating two things that post #70 runs together. Two things before anyone answers the substance. First, the context in the first post is clear and specific.…
Bioimpedance and hydration: why the number moves Replied, post #67 · Outcomes › Body composition · 27 Jun 2026 · 7 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…
How shortages have affected compounding permissions — does this still hold? Replied, post #18 · Access › Shortages · 27 Jun 2026 · 5 likes International supply chains: a shortage in one country does not mean shortage in another. That is why ordering from multiple suppliers before a shortage gets bad is…
Insomnia at a dose step: reported experiences — the long version Replied, post #38 · Wellbeing › Sleep · 24 Jun 2026 · 0 likes On post #34 — agreed on the reasoning, with one qualification. Apnoea monitoring: if you have diagnosed or suspected sleep apnoea, periodic monitoring (annually) during…
An appeal that succeeded, with the letter structure — the long version Replied, post #115 · Access › Insurance & coverage · 18 Jun 2026 · 3 likes Appeals process: unemotional prose, the criterion quoted verbatim, evidence mapped to it point by point, dates, and nothing else. Describing how the decision affected…
Why fasting instructions for oral semaglutide are not optional advice Replied, post #45 · Compounds › Oral incretins · 16 Jun 2026 · 13 likes Trial adherence in an oral trial with strict administration requirements is genuinely worse than trial-published data often suggests. That is why the exposure…
What other technical communities get right that we do not Replied, post #5 · Lounge › Off topic · 13 Jun 2026 · 6 likes Personal stories: if you want to talk about what led you to this compound, your journey, or how the change has affected your life, the Lounge is the place for that.
Revisiting: Taste changes and food aversion, reported and discussed Replied, post #5 · Practice › Side effects · 13 Jun 2026 · 21 likes On the opening post — agreed on the reasoning, with one qualification. Fatigue: commonly reported, frequently multifactorial. It is worth asking whether other factors…
[2026 update] Travelling with an injectable: documentation and practicalities Replied, post #10 · Access › International · 11 Jun 2026 · 1 like post #9 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…
Comparing prices across jurisdictions without misleading yourself Replied, post #44 · Access › Pricing · 6 Jun 2026 · 4 likes Pharmacy acquisition cost: a pharmacy pays less than the patient pays, even at insurance rates. That margin is where the pharmacy's costs and profit live.
Why we ask for units every single time, with three examples of what goes wrong Replied, post #20 · Start Here › How to Ask · 5 Jun 2026 · 17 likes Asking a follow-up: new topic or reply in the old one? If the answer depends on the previous post, reply. If it is a question that makes sense without the previous…
A plateau that disappeared when I changed how I measured — the long version Replied, post #46 · Outcomes › Progress reports · 4 Jun 2026 · 29 likes post #45 is right about the mechanism and I think understates the practical bit. Rate of change: reporting progress as "lost 5 kg in 12 weeks" is more useful than…
Endotoxin and why it is a separate question from purity — what changed since Replied, post #35 · Analytics › Impurities & related substances · 3 Jun 2026 · 0 likes Deletion sequences (incomplete coupling during synthesis): lower in mass by one residue. Chromatographically they usually elute earlier or later depending on the…
I have no scientific background — can I still follow the analytics categories? Replied, post #11 · Start Here › Welcome · 31 May 2026 · 1 like 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…
I have no scientific background — can I still follow the analytics categories? Replied, post #9 · Start Here › Welcome · 27 May 2026 · 0 likes I read post #7 twice before replying, because I had assumed the opposite. Introducing yourself is fine and requires no question. Post in this subcategory, describe the…
Bariatric surgery history: altered anatomy, altered expectations Replied, post #15 · Clinical › Special populations · 19 May 2026 · 0 likes Gastroparesis: pre-existing severe delayed gastric emptying can worsen with compounds that slow it further. Discussion with a clinician is prudent if this history exists.
How this community labels and discusses unrefereed work — the long version Replied, post #13 · Evidence › Preprints · 12 May 2026 · 0 likes Coming back to post #11, because the follow-up matters more than the original answer. Discussing preprints in this community: bring them in for early discussion, label…
The best-written scientific paper you have read Replied, post #38 · Lounge › Off topic · 9 May 2026 · 3 likes On post #34 — agreed on the reasoning, with one qualification. Lower-stakes conversation that does not belong in the technical categories. Still civil, still sourced…
Prescription portability between countries Replied, post #28 · Access › International · 9 May 2026 · 0 likes Compounding in different countries: some countries allow pharmacy compounding under defined conditions; others do not. The rules are jurisdiction-specific and change.
Manufacturer assistance programmes and their eligibility rules Replied, post #23 · Access › Pricing · 5 May 2026 · 32 likes Picking up post #20: that is the part I would want checked first. Compute cost per delivered dose at your dose if you want a number you can act on. That requires…
Request: show the solution author in the topic list — what changed since Replied, post #46 · Meta › Feature requests · 2 May 2026 · 0 likes post #45 answers the question as asked. The question underneath it is different. Duplicate requests: if several people request the same feature, the requests often get…
[2026 update] 0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Replied, post #79 · Devices › Syringes & needles · 2 May 2026 · 1 like I read post #77 twice before replying, because I had assumed the opposite. Dead volume: residual liquid in the hub and needle after withdrawal. Typical residual is 0.01…
A single out-of-range value on an otherwise normal panel Replied, post #39 · Clinical › Bloodwork · 26 Apr 2026 · 6 likes Worth separating two things that post #35 runs together. Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather…
[2026 update] Area percent versus weight percent: the confusion that causes most arguments Replied, post #31 · Analytics › HPLC & UHPLC · 16 Apr 2026 · 22 likes System suitability testing: injections run before and during the sample run to establish whether the instrument, column and method were performing when the sample was…
Journal club: is percentage weight change the right endpoint? Replied, post #64 · Evidence › Journal club · 13 Apr 2026 · 13 likes This follows post #61 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…
Revisiting: The report format the maintainers ask for, and why each field is there Replied, post #49 · Sourcing › Vendor reports · 11 Apr 2026 · 0 likes Structured report format: compound, lot, independent testing service, method as reported, result, and the certificate figure for the same lot. One lot is one lot. It…
CJC-1295 with and without DAC: what the modification does Replied, post #28 · Compounds › Secretagogues & GH axis · 7 Apr 2026 · 29 likes Pulsatile secretion matters because growth hormone is secreted in pulses, not continuously. A single post-dose growth hormone level is nearly uninterpretable. Assessing…
Managing an unplanned gap in supply Replied, post #87 · Access › Shortages · 6 Apr 2026 · 0 likes I read post #85 twice before replying, because I had assumed the opposite. Communication from suppliers: a supplier having supply problems usually communicates them. If…
Reconstitution volumes that produce round numbers, tabulated Replied, post #82 · Practice › Reconstitution · 4 Apr 2026 · 0 likes post #81 answers the question as asked. The question underneath it is different. Foaming during reconstitution: bubbles in the solution are usually just air…
A parcel stationary at a customs facility for nine days Replied, post #44 · Sourcing › Logistics · 1 Apr 2026 · 26 likes Insurance and carrier liability: most parcel carriers limit liability. Understanding the limits before choosing a carrier matters if you are shipping expensive material.
Type 2 diabetes and the largest part of the evidence base Replied, post #51 · Clinical › Comorbidities · 1 Apr 2026 · 15 likes Cardiovascular disease: several compounds have cardiovascular outcome trials. SELECT was in people without diabetes; SUSTAIN 6 was in high-risk diabetes. Absolute…
Manufacturer assistance programmes and their eligibility rules Replied, post #12 · Access › Pricing · 19 Mar 2026 · 3 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.
Adducts: sodium, potassium, and the peak you did not expect — does this still hold? Replied, post #71 · Analytics › Mass spectrometry · 16 Mar 2026 · 9 likes I read post #69 twice before replying, because I had assumed the opposite. Tandem mass spectrometry: MS/MS fragments the molecular ion and uses fragment masses to…
Ultrasound and skinfolds: operator dependence in practice — what changed since Replied, post #25 · Outcomes › Body composition · 16 Mar 2026 · 33 likes Visceral fat: DXA does not distinguish visceral (organ-associated) fat from subcutaneous fat. That distinction might matter but requires different imaging to measure.
Oral versus injected administration claims for BPC-157 Replied, post #12 · Compounds › Repair & healing peptides · 13 Mar 2026 · 9 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…
Coming back to: Time to steady state after a dose increase Replied, post #13 · Pharmacology › Pharmacokinetics · 12 Mar 2026 · 29 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…
Splitting a weekly dose in two: the pharmacokinetic argument against Replied, post #26 · Practice › Dosing & titration · 12 Mar 2026 · 29 likes When a dose reduction is the correct response to a side effect: if a side effect is dose-dependent (nausea, constipation, injection discomfort), reducing the dose is a…
Reading a preclinical wound-healing model and its relevance to a human tendon — a second… Replied, post #33 · Compounds › Repair & healing peptides · 11 Mar 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…
Revisiting: Absolute versus relative contraindications Replied, post #39 · Safety › Contraindications · 8 Mar 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…
[2026 update] Confounding by indication, explained with a concrete example Replied, post #113 · Evidence › Study critique · 5 Mar 2026 · 25 likes Generalisability: do the inclusion/exclusion criteria narrow the population so much that results do not apply to real people asking about it? This is a fair criticism…
A plateau that disappeared when I changed how I measured — the long version Replied, post #11 · Outcomes › Progress reports · 25 Feb 2026 · 0 likes Plateaus and resets: if weight loss stalls and then resumes, that is ordinary. It is not evidence that the medication stopped working. It is not evidence that it is…
Interpreting a result that disagrees with the supplier's certificate Replied, post #128 · Sourcing › Independent verification · 18 Feb 2026 · 3 likes Interpreting a result: a purity figure is one measurement on one vial on one day. Agreement across two services is much stronger. A single high number does not…
Second pass at: Identical chromatograms across two different lots Replied, post #13 · Sourcing › Red flags · 17 Feb 2026 · 2 likes Unresponsiveness: a supplier that does not reply to reasonable requests for documentation or clarification is showing you something about how they operate.
[2026 update] Reading a supplementary appendix and finding the interesting part Replied, post #31 · Evidence › Trials · 8 Feb 2026 · 0 likes Absolute numbers, not just relative: a 30% relative reduction tells you the ratio but not the practical magnitude. The event rate in each arm and the difference between…
Follow-up: Search filters: what is missing Replied, post #29 · Meta › Site feedback · 8 Feb 2026 · 10 likes post #28 is right about the mechanism and I think understates the practical bit. Moderation decisions: if you disagree with a moderation decision, raising it here gives…
Second pass at: Circumference measurements as a poor man's composition estimate Replied, post #44 · Outcomes › Body composition · 24 Jan 2026 · 10 likes Bioelectric impedance analysis: less precise than DXA and strongly affected by hydration state. Not reliable for detecting month-to-month changes. Useful for trend over…
Liver enzymes drifting down and what that usually means Replied, post #47 · Clinical › Bloodwork · 17 Jan 2026 · 11 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…
Distinguishing expected GI effects from something that needs urgent attention Replied, post #98 · Practice › Side effects · 14 Jan 2026 · 0 likes Nausea: the most common side effect and the most dose- and titration-dependent one. It is usually most prominent in the first 24 to 48 hours after injection and…
What a good consultation looks like from the other side Replied, post #9 · Clinical › Prescriber conversations · 11 Jan 2026 · 25 likes post #8 is right about the mechanism and I think understates the practical bit. What to bring: copies of relevant lab results, pharmacy records (to confirm doses…
Measurement error in home scales, with a worked standard deviation — the long version Replied, post #5 · Research Methods › Statistics · 31 Dec 2025 · 4 likes This follows post #2 rather than contradicting it. Power and sample size: a study might be too small to detect a real effect (low power). Sample size calculations help…
Follow-up: Bug report: the reconstitution calculator and a rounding edge case Replied, post #6 · Data & Tools › Calculators · 19 Dec 2025 · 32 likes I read post #4 twice before replying, because I had assumed the opposite. Reporting bugs: if you notice a calculator giving wrong results, report it in this…
[2026 update] Whether protein timing matters at a large deficit Replied, post #6 · Nutrition & Training › Protein & intake · 16 Dec 2025 · 10 likes Eating anything at all: on substantial appetite suppression, eating enough total calories to maintain lean mass is the priority. Protein comes second to total intake.
[2026 update] Storing lyophilised material long term: what governs the shelf life Replied, post #31 · Practice › Storage & stability · 3 Dec 2025 · 0 likes Vial integrity: once a vial is entered with a needle repeatedly, the rubber closure degrades and the integrity fails. Using the same vial repeatedly over weeks or…
Coming back to: Semaglutide in people without diabetes: what the evidence base looks like Replied, post #12 · Compounds › Semaglutide · 28 Nov 2025 · 14 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 Replied, post #71 · Regional › European Union · 15 Nov 2025 · 8 likes Worth separating two things that post #67 runs together. Spain: AEMPS is the regulator. Public reimbursement for weight management has been limited with regional…
Conference abstracts as evidence: the weakest common citation Replied, post #4 · Evidence › Preprints · 28 Oct 2025 · 20 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…
An inter-laboratory comparison on one lot, tabulated — what changed since Replied, post #10 · Analytics › Method validation · 27 Oct 2025 · 6 likes This follows post #7 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…
SURMOUNT-4 and what withdrawal data does and does not tell an individual — one year on Replied, post #61 · Compounds › Tirzepatide · 21 Oct 2025 · 4 likes SURPASS-2 compared tirzepatide with semaglutide 1.0 mg, the licensed diabetes dose at that time. It did not compare with semaglutide 2.4 mg, the highest approved dose.…
A 40-week log with the measurement method stated Replied, post #25 · Outcomes › Progress reports · 17 Oct 2025 · 23 likes Rate of change: reporting progress as "lost 5 kg in 12 weeks" is more useful than "currently at 82 kg" because the rate tells you whether the change is steady,…
Cagrilintide's dosing interval and the pharmacokinetics behind it Replied, post #16 · Compounds › Cagrilintide & amylin analogues · 1 Oct 2025 · 31 likes I read post #14 twice before replying, because I had assumed the opposite. Nausea profile of amylin analogues: the historical agent pramlintide required multiple daily…
Citing a preprint in a maintained document: our rule and its reasoning — does this still… Replied, post #57 · Evidence › Preprints · 30 Sep 2025 · 30 likes What changes between preprint and publication: authors respond to reviewer comments, re-analyse data, correct errors found in peer review, and sometimes report…
The nausea timeline across the first four weeks, with a tabulated log — what changed since Replied, post #9 · Practice › Side effects · 23 Sep 2025 · 1 like Timeline matters: onset, duration, pattern over days or weeks, relationship to injection and to meals all provide information that "I have nausea" does not. Posting…
Coming back to: Oxidation and deamidation mass shifts, tabulated Replied, post #37 · Analytics › Mass spectrometry · 18 Sep 2025 · 3 likes Picking up post #34: that is the part I would want checked first. Resolution: "high resolution" commonly means
AOD-9604 and the fragment hypothesis, revisited Replied, post #15 · Compounds › Other compounds · 17 Sep 2025 · 28 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…
Hypertension improvement and when medication needs revisiting Replied, post #27 · Clinical › Comorbidities · 27 Aug 2025 · 6 likes Coming back to post #25, because the follow-up matters more than the original answer. Cardiovascular disease: several compounds have cardiovascular outcome trials.…
When a preprint is the best available evidence and we say so Replied, post #77 · Evidence › Preprints · 20 Aug 2025 · 0 likes I read post #75 twice before replying, because I had assumed the opposite. Check whether it was later published: searching for the preprint's first author and keywords…
Power cut for eleven hours: how I assessed it afterwards Replied, post #26 · Practice › Storage & stability · 17 Aug 2025 · 16 likes Coming back to post #24, because the follow-up matters more than the original answer. Temperature excursions: if a vial sat at room temperature for a time, the question…
Request: a diff view for wiki revisions — the long version Replied, post #31 · Meta › Feature requests · 16 Aug 2025 · 0 likes On post #27 — agreed on the reasoning, with one qualification. Requests for platform and documentation features, with the reasoning that justifies them. If you think…
How to research a compound with no human data without deceiving yourself Replied, post #118 · Compounds › Other compounds · 5 Aug 2025 · 13 likes Coming back to post #116, because the follow-up matters more than the original answer. Research-use-only status is a legal classification, not a safety classification.…
Pooling trials with different estimands — what changed since Replied, post #7 · Evidence › Meta-analyses · 27 Jul 2025 · 0 likes On post #3 — agreed on the reasoning, with one qualification. Study quality and weighting: some meta-analyses weight all studies equally; others weight by study size or…
Sequence verification for an obscure compound: how it is done Replied, post #98 · Compounds › Other compounds · 20 Jul 2025 · 0 likes Melanocortin agonists: mechanism involves the melanocortin-4 receptor pathway that regulates appetite. The documented adverse profile includes blood pressure elevation…
A field-by-field walk through a certificate of analysis Replied, post #53 · Analytics › COA interpretation · 15 Jul 2025 · 6 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…
Tirzepatide in type 2 diabetes: the SURPASS programme, summarised honestly Replied, post #128 · Compounds › Tirzepatide · 5 Jul 2025 · 2 likes I read post #126 twice before replying, because I had assumed the opposite. Dual agonism versus dose: how much of tirzepatide's effect is the GIP component and how much…
[2026 update] Cold solution and stinging: the simplest fix Started this topic · Practice › Administration · 28 Jun 2025 · 21 likes Cold solution and stinging: the simplest fix — setting out what I have, and where I think it stops being reliable. Reporting something rather than asking about it, in…
Insulin combinations and hypoglycaemia risk Replied, post #19 · Practice › Interactions · 24 Jun 2025 · 21 likes On post #15 — agreed on the reasoning, with one qualification. SGLT2 inhibitors: frequently co-administered and relevant to renal and cardiovascular discussion, not to…
Interim analyses and stopping rules — does this still hold? Started this topic · Evidence › Trials · 21 Jun 2025 · 33 likes Interim analyses and stopping rules — does this still hold? — that is the question, and I have not found it answered plainly anywhere I have looked. Comparing SCALE ( N…
Hepatic steatosis: what the MASH trial evidence supports Replied, post #66 · Clinical › Comorbidities · 16 Jun 2025 · 0 likes Picking up post #63: that is the part I would want checked first. Hepatic steatosis and MASH: a phase 2 trial in semaglutide for steatohepatitis showed resolution was…
The CagriSema phase 2 paper and what a fixed combination buys — the long version Replied, post #107 · Compounds › Cagrilintide & amylin analogues · 15 Jun 2025 · 8 likes For anyone arriving from searches on "amylin agonist": this subcategory discusses published clinical evidence and what it does and does not establish. It does not…
Half-life, steady state, and accumulation worked through Replied, post #117 · Pharmacology › Pharmacokinetics · 14 Jun 2025 · 5 likes Worth separating two things that post #113 runs together. Renal clearance: these compounds are cleared partly via the kidney. In severe renal impairment, clearance is…
Second pass at: Semaglutide and alcohol: what is actually documented Replied, post #12 · Compounds › Semaglutide · 11 Jun 2025 · 1 like 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: Tracking intake honestly when appetite is absent Replied, post #33 · Nutrition & Training › Protein & intake · 7 Jun 2025 · 0 likes Timing of protein: spreading protein intake across the day, with some at each meal, is more practical than trying to hit the whole target at one sitting on suppressed…
Reading a chromatogram someone posted without axes Replied, post #38 · Analytics › HPLC & UHPLC · 28 May 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…
DXA precision and the least significant change for lean mass — the long version Replied, post #106 · Outcomes › Body composition · 27 May 2025 · 3 likes This follows post #103 rather than contradicting it. I disagree with the reply above, and I think the disagreement is substantive rather than terminological. The…
Coming back to: Semaglutide half-life: where the 165 to 184 hour figure comes from Replied, post #6 · Compounds › Semaglutide · 25 May 2025 · 5 likes Approved indications differ by jurisdiction and change. As of mid-2026 the weight-management indication is approved in many European jurisdictions but not all, and…
Obstructive sleep apnoea and a hard endpoint in this class Replied, post #85 · Clinical › Comorbidities · 15 May 2025 · 18 likes Chronic kidney disease: compounds in this class have renal benefit in people with kidney disease. The benefit appears to be additive to other renal-protective agents,…
Reading a trial's population section before its results — does this still hold? Replied, post #62 · Evidence › Trials · 3 May 2025 · 7 likes Open-label design: unblinded trials admit expectation effects. For weight-loss trials where one arm loses substantial weight and the other does not, complete blinding…
Adducts: sodium, potassium, and the peak you did not expect Replied, post #72 · Analytics › Mass spectrometry · 19 Apr 2025 · 20 likes Coming back to post #70, because the follow-up matters more than the original answer. Sample matrix effects: if a sample is dissolved in a complex matrix, other…
Journal club: STEP 1 and the treatment-policy estimand — does this still hold? Replied, post #4 · Evidence › Journal club · 16 Apr 2025 · 22 likes On post #2 — agreed on the reasoning, with one qualification. Critical appraisal template: (1) What did the trial set out to estimate? (2) Could the design answer that…
Reading order for a first week here, and what to skip until later Replied, post #78 · Start Here › Welcome · 11 Apr 2025 · 9 likes Worth separating two things that post #74 runs together. The moderation log is public. Every staff action is logged with the rule cited and the reasoning stated. If you…
Retatrutide dose escalation in the published trials Replied, post #105 · Compounds › Retatrutide · 8 Apr 2025 · 8 likes On post #101 — agreed on the reasoning, with one qualification. Retatrutide is investigational. Anything obtained outside a trial is by definition research-use-only…
[2026 update] Citation sweep results: how many references did not say what was claimed Replied, post #21 · Meta › Wiki maintenance · 7 Apr 2025 · 1 like 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.
Obstructive sleep apnoea and a hard endpoint in this class Replied, post #41 · Clinical › Comorbidities · 24 Mar 2025 · 0 likes Picking up post #38: that is the part I would want checked first. Bariatric surgery history: altered anatomy after surgery affects absorption. That matters for oral…
A promotion I argued against, and why I lost Replied, post #131 · Documentation › Doc review · 13 Mar 2025 · 11 likes Multilingual versions: if a maintained page should exist in another language, suggesting it here with your willingness to help translate can make it happen.
Preparing for an appointment: one page, three questions Replied, post #10 · Clinical › Prescriber conversations · 7 Mar 2025 · 0 likes Discussing side effects: be specific. "Nausea" is less useful than "I have nausea worst 24 to 36 hours after injection, severity 2 to 3 out of 4, stable over weeks".…
Individual participant data versus aggregate data Replied, post #21 · Evidence › Meta-analyses · 5 Mar 2025 · 0 likes Subgroup analysis: sometimes a meta-analysis reports separate pooled estimates for different subgroups (e.g., by baseline body mass index or by trial duration). Be…
Adducts: sodium, potassium, and the peak you did not expect Replied, post #25 · Analytics › Mass spectrometry · 4 Mar 2025 · 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…
Charge states for a 4 kDa peptide, worked through Replied, post #14 · Analytics › Mass spectrometry · 3 Mar 2025 · 2 likes Picking up post #11: that is the part I would want checked first. Common adducts: sodium adds ≈22, potassium adds ≈38 compared to hydrogen. A [M+Na]+ peak is common and…
Requesting a page: what makes a good request Replied, post #9 · Documentation › Wiki requests · 27 Feb 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…
Anxiety in the first weeks: drug, situation, or both Replied, post #50 · Wellbeing › Mental health · 14 Feb 2025 · 10 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…
Coming back to: Official shortage notices and what they authorise Replied, post #17 · Access › Shortages · 14 Feb 2025 · 4 likes International supply chains: a shortage in one country does not mean shortage in another. That is why ordering from multiple suppliers before a shortage gets bad is…
Journal club: SUSTAIN 6 and its retinopathy signal — does this still hold? Replied, post #38 · Evidence › Journal club · 7 Feb 2025 · 1 like I read post #36 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…
Second pass at: Manufacturer assistance programmes and their eligibility rules Started this topic · Access › Pricing · 20 Jan 2025 · 18 likes Second pass at: Manufacturer assistance programmes and their eligibility rules — setting out what I have, and where I think it stops being reliable. Documenting an…
How compounding permissions changed when supply normalised Replied, post #9 · Sourcing › Regulatory · 16 Jan 2025 · 2 likes This follows post #6 rather than contradicting it. Why this category is maintained as documentation, not as recommendations: the goal is factual accuracy and sourcing,…
About the Vendor reports category Replied, post #4 · Sourcing › Vendor reports · 14 Jan 2025 · 0 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…
Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #50 · Data & Tools › Calculators · 13 Jan 2025 · 0 likes Why calculators are not medical advice: they do arithmetic. Medical decisions are not arithmetic. A calculator that says a certain dose is "compatible with" a certain…
Follow-up: Oral contraceptives and delayed emptying: what the data shows Replied, post #35 · Practice › Interactions · 8 Jan 2025 · 25 likes post #34 answers the question as asked. The question underneath it is different. Anticoagulants: no direct interaction with the compounds in this class. Weight loss and…
Preservatives: function, testing, and limits Started this topic · Pharmacology › Formulation chemistry · 6 Jan 2025 · 16 likes Preservatives: function, testing, and limits — setting out what I have, and where I think it stops being reliable. Working through the identity arithmetic and I would…
Books and papers worth reading that are not about this at all Replied, post #9 · Lounge › Off topic · 3 Jan 2025 · 21 likes This follows post #6 rather than contradicting it. Humour: light, relevant humour is welcome. Cruel humour targeting individuals or groups is not.
Revisiting: Holding a dose indefinitely: is there a documented downside? Replied, post #21 · Practice › Dosing & titration · 28 Dec 2024 · 6 likes Splitting a weekly dose in two: the pharmacokinetic argument against is that you want the benefit of long half-life, which gives a slowly changing plasma level from a…
Second pass at: Regression to the mean in progress reports Replied, post #9 · Research Methods › Statistics · 26 Dec 2024 · 5 likes Confounding: a third variable explains an apparent association. In randomised data, randomisation balances confounders. In observational data, confounders can be…
What a seizure notice actually says Replied, post #15 · Sourcing › Logistics · 12 Dec 2024 · 8 likes Packaging integrity on arrival: if a parcel arrives with compromised packaging, that is evidence of a handling problem in transit. The contents may or may not be…
Coming back to: Renal impairment: what the labelling says about dose Replied, post #21 · Clinical › Special populations · 12 Dec 2024 · 23 likes Older adults: sarcopenia risk is higher, polypharmacy is common, and the clinical trials did not enroll many people over 75. Extrapolating to very old people is…
When "no data" is the complete and final answer Replied, post #37 · Compounds › Other compounds · 8 Dec 2024 · 3 likes Worth separating two things that post #33 runs together. This subcategory exists because some people will research compounds outside the main groups discussed here. The…
Injection-site reactions: describing them precisely enough to be useful Replied, post #7 · Practice › Side effects · 16 Nov 2024 · 21 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…
Follow-up: Recovery when intake is low: what to cut first Replied, post #5 · Nutrition & Training › Resistance training · 3 Nov 2024 · 5 likes post #4 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…
Coming back to: The nausea timeline across the first four weeks, with a tabulated log Replied, post #23 · Practice › Side effects · 28 Oct 2024 · 8 likes post #22 answers the question as asked. The question underneath it is different. Timeline matters: onset, duration, pattern over days or weeks, relationship to…
Coming back to: Recording a dissent on a document rather than suppressing it Started this topic · Documentation › Doc review · 19 Oct 2024 · 1 like Posting this under the heading it deserves: Recording a dissent on a document rather than suppressing it Everything below is what sits behind that. Process question…
Journal club: SURPASS-2 and the semaglutide 1 mg comparator Replied, post #56 · Evidence › Journal club · 27 Sep 2024 · 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…
Revisiting: How to bring a laboratory report to an appointment usefully Replied, post #33 · Clinical › Bloodwork · 16 Sep 2024 · 3 likes TSH and free hormones: TSH is a reasonable screening test but does not tell you about actual free hormone levels. If TSH is abnormal, free thyroid hormones confirm…
People with a low starting BMI: where the evidence stops Replied, post #2 · Clinical › Special populations · 15 Sep 2024 · 0 likes Worth separating two things that the opening post runs together. Gastroparesis: pre-existing severe delayed gastric emptying can worsen with compounds that slow it…
Correlation in a self-tracked dataset: what it can support Replied, post #92 · Research Methods › Statistics · 24 Aug 2024 · 14 likes I read post #90 twice before replying, because I had assumed the opposite. Confounding: a third variable explains an apparent association. In randomised data,…
Correlation in a self-tracked dataset: what it can support Replied, post #71 · Research Methods › Statistics · 23 Aug 2024 · 26 likes post #70 is right about the mechanism and I think understates the practical bit. Power and sample size: a study might be too small to detect a real effect (low power).…
Coming back to: Purity assay versus content assay: two different numbers Replied, post #32 · Analytics › COA interpretation · 10 Aug 2024 · 5 likes A certificate of analysis is a statement by its issuer that a defined test was performed on a defined lot and produced a defined result. That is all it is, and it is…
PIONEER 6 cardiovascular safety, read as a safety trial rather than an efficacy one —… Replied, post #7 · Compounds › Oral incretins · 28 Jul 2024 · 0 likes Orforglipron is a small molecule, not a peptide. That changes almost everything: no absorption enhancer required, no fasting window, chemical synthesis instead of…
How this community labels and discusses unrefereed work Replied, post #112 · Evidence › Preprints · 25 Jul 2024 · 24 likes I read post #110 twice before replying, because I had assumed the opposite. Unrefereed work is not worthless. A great deal of it survives review substantially…