m.ferrand
TL1 Member · Geneva, CH
New member with a chemistry degree and no clinical experience whatsoever.
Joined 23 April 2025 · last posted 5d
30 posts, newest first. Showing up to 150.
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Revisiting: The best-written scientific paper you have read Replied, post #111 · Lounge › Off topic · 23 Jul 2026 · 15 likes Picking up post #108: that is the part I would want checked first. Science communication: if you come across an interesting science paper or article about peptides or…
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Coming back to: Time to steady state after a dose increase Replied, post #106 · Pharmacology › Pharmacokinetics · 20 Jul 2026 · 32 likes On post #102 — agreed on the reasoning, with one qualification. Practical note that does not fit anywhere else. Whatever you conclude from this topic, write down what…
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Why the Start Here categories exist, and what they are not for Replied, post #4 · Start Here › Welcome · 16 Jul 2026 · 0 likes I read post #3 twice before replying, because I had assumed the opposite. On the reading order question specifically: start with the how-to-ask materials in this…
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Osteoarthritis and mechanical versus metabolic improvement — one year on Replied, post #50 · Clinical › Comorbidities · 13 Jul 2026 · 1 like I read post #48 twice before replying, because I had assumed the opposite. Chronic kidney disease: compounds in this class have renal benefit in people with kidney…
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Private prescribing in the UK: what is actually involved Replied, post #48 · Regional › UK & Ireland · 26 Jun 2026 · 17 likes Worth separating two things that post #44 runs together. Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather…
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Reused chromatograms across lots: how to spot it Replied, post #51 · Analytics › COA interpretation · 21 Jun 2026 · 1 like Worth separating two things that post #47 runs together. Practical note that does not fit anywhere else. Whatever you conclude from this topic, write down what you did…
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[2026 update] Travelling with an injectable: documentation and practicalities Replied, post #23 · Access › International · 19 Jun 2026 · 19 likes Country-by-country legality: compound approval and legal status differ substantially by jurisdiction. Semaglutide approved in the United States and European Union;…
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Second pass at: Leak-back after withdrawal and whether you lost a meaningful dose Replied, post #19 · Practice › Administration · 12 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…
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Tracking intake honestly when appetite is absent Replied, post #45 · Nutrition & Training › Protein & intake · 2 Jun 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…
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Peak-to-trough ratio at steady state for a weekly agent Replied, post #18 · Pharmacology › Pharmacokinetics · 31 May 2026 · 2 likes Bioavailability: oral semaglutide has low bioavailability (roughly 1%) due to peptide instability. That is why the oral dose (14 mg) is so much larger than the…
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[2026 update] A vial that will not fully dissolve: what to check and in what order Replied, post #75 · Practice › Reconstitution · 27 May 2026 · 10 likes A vial that will not fully dissolve: check in order: is the diluent genuinely room temperature (some preservatives crystallise in cold), is the vial being warmed gently…
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Review: a draft on reconstitution arithmetic, with objections — one year on Replied, post #17 · Documentation › Doc review · 24 May 2026 · 1 like 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.
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0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Replied, post #49 · Devices › Syringes & needles · 23 May 2026 · 1 like Worth separating two things that post #45 runs together. Aspirating before injection: for subcutaneous injection, aspirating (pulling back on the plunger to check for…
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Revisiting: The best-written scientific paper you have read Started this topic · Lounge › Off topic · 23 May 2026 · 2 likes Posting this under the heading it deserves: Revisiting: The best-written scientific paper you have read Everything below is what sits behind that. Lower-stakes topic,…
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Second pass at: Absence of evidence and evidence of absence Replied, post #2 · Research Methods › Statistics · 11 May 2026 · 19 likes Regression to the mean: if you select people with extreme values (very high or very low), their next measurement is often less extreme just by chance. This can look…
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Contributing data without breaching anyone's privacy Replied, post #2 · Data & Tools › Datasets · 2 Mar 2026 · 0 likes the opening post answers the question as asked. The question underneath it is different. For anyone arriving from a search: the marked solution above is the direct…
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Measurement error in a self-reported exposure Replied, post #34 · Evidence › Study critique · 23 Feb 2026 · 14 likes This follows post #31 rather than contradicting it. For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add…
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Reading an interaction checker output critically Replied, post #119 · Practice › Interactions · 14 Feb 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.
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Non-inferiority margins: how they are chosen and how they are abused — a second dataset Replied, post #28 · Evidence › Trials · 13 Feb 2026 · 8 likes post #27 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…
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Temperature loggers worth the money — the long version Replied, post #107 · Devices › Cold chain · 5 Jan 2026 · 2 likes Assessing an excursion: if a package sat at room temperature for a time, visual inspection (cloudiness, discoloration, particles) can alert you to problems. Not visible…
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Pen dose counters: what a click does and does not guarantee Replied, post #102 · Devices › Pens & autoinjectors · 19 Nov 2025 · 0 likes Pen confusion between compounds: if you are using multiple pens or alternating pens, confirming you have the correct pen before injection prevents administration…
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Older adults, sarcopenia risk, and the trade-off nobody quantifies — the long version Replied, post #50 · Clinical › Special populations · 12 Nov 2025 · 17 likes post #49 answers the question as asked. The question underneath it is different. Renal impairment: the compounds are cleared renally to some degree. Dose adjustments…
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Sleep tracking data and its considerable limitations Replied, post #111 · Wellbeing › Sleep · 28 Oct 2025 · 20 likes Sleep apnoea improvement: as weight is lost, sleep apnoea usually improves. The timeframe is weeks to months, not immediate. Improvement often is gradual rather than…
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A ten-fold dose error caught before injection Replied, post #88 · Devices › Syringes & needles · 25 Aug 2025 · 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…
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Airline travel with a temperature-sensitive injectable — what changed since Replied, post #60 · Devices › Cold chain · 7 Aug 2025 · 22 likes Freeze-thaw: some peptides tolerate freezing; others do not. Check your compound's labelling. Generally, repeated freeze-thaw is worse than single freeze-thaw.
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How to research a compound with no human data without deceiving yourself Replied, post #3 · Compounds › Other compounds · 29 Jul 2025 · 3 likes post #2 answers the question as asked. The question underneath it is different. Distinguishing marketed research compounds from true chemical synthesis: some online…
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The CagriSema phase 2 paper and what a fixed combination buys Replied, post #65 · Compounds › Cagrilintide & amylin analogues · 6 Jul 2025 · 1 like This follows post #62 rather than contradicting it. Cagrilintide molecular characteristics: it is a synthetic amylin analogue, substituted to prevent the…
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Second pass at: How to research a compound with no human data without deceiving yourself Replied, post #32 · Compounds › Other compounds · 17 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…
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Coming back to: When to suspect the method rather than the sample Replied, post #74 · Analytics › Method validation · 14 Dec 2024 · 26 likes Robustness: the method gives consistent results when minor parameters vary. Tested by deliberately varying pH, temperature, flow rate, and mobile phase composition…
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Blind submission and why it changes minds Replied, post #9 · Sourcing › Independent verification · 4 Jul 2024 · 1 like Coming back to post #7, because the follow-up matters more than the original answer. Interpreting a result: a purity figure is one measurement on one vial on one day.…