k.perrin
TL2 Moderator · Galway
Contributes reviews on supplier material. Based in Galway.
Joined 7 December 2024 · last posted 2d
84Posts here
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Most-liked posts
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Muscle cramps: the ordinary causes before the exotic ones Replied, post #21 · Practice › Side effects · 14 Jan 2026 · 31 likes Worth separating two things that post #17 runs together. Vomiting: when it is expected (first-dose reactions or early titration) and when it is a reason to stop and…
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Journal club: STEP 4 and what a withdrawal design can prove Replied, post #64 · Evidence › Journal club · 26 Jun 2025 · 29 likes TRIUMPH (ongoing): Retatrutide phase 3. No results yet. Nothing should be attributed to it because it has not finished. When it does, this discussion will return to it.
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Mass error in ppm: the arithmetic and the caveat Replied, post #39 · Analytics › Mass spectrometry · 13 Feb 2026 · 27 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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"Greater than or equal to 99%" as a specification rather than a result Replied, post #67 · Analytics › COA interpretation · 8 Nov 2025 · 27 likes I read post #65 twice before replying, because I had assumed the opposite. Water content (residual moisture) matters: lyophilised peptide is not dry. A few percent…
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What I would want from a home test that does not exist yet — what changed since Replied, post #65 · Analytics › Home & field testing · 23 Jun 2026 · 26 likes Lateral-flow devices: like a rapid COVID test. They have a reagent strip and produce a colour result. They are quick but not precise and not intended for quantitative…
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How to read a forest plot, properly, from scratch Replied, post #77 · Evidence › Trials · 28 Dec 2025 · 25 likes Surrogate endpoints: an endpoint that is not the outcome that matters but is measured as a stand-in. HbA1c is a surrogate for long-term glucose control and the…
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Badges earned, in order
| Badge | Tier | Granted |
|---|---|---|
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| De-escalator | gold | 5 Mar 2026 |