au.pereira
TL2 · Salvador
Contributes reviews on supplier material. Based in Salvador.
Joined 25 February 2025 · last posted 2d
80Posts here
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Coming back to: A community side-effect dataset, with its response rate and biases Replied, post #102 · Data & Tools › Datasets · 26 Jul 2026 · 23 likes Post #101 answers the question as asked. The question underneath it is different. Aggregating first-hand accounts does not produce evidence of the kind a trial…
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Immortal time bias in a claims-database study — one year on Replied, post #37 · Evidence › Study critique · 22 Jul 2026 · 15 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…
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How shortages have affected compounding permissions Replied, post #51 · Access › Shortages · 19 Jul 2026 · 10 likes Counterpoint on shortages, offered without confidence: the same observation is consistent with a much duller explanation, and nobody has ruled the dull one out.
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Deletion sequences: expected mass shifts by residue — the long version Replied, post #13 · Analytics › Impurities & related substances · 16 Jul 2026 · 16 likes Post #11 describes the usual case. This is about the unusual one. Incomplete deprotection leaves a protecting group attached, raising the mass substantially and usually…
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What to bring: records that a clinician can actually use Replied, post #2 · Clinical › Prescriber conversations · 15 Jul 2026 · 3 likes Prescription logistics: confirm whether it will be filled locally, requires mail order, or will be prescribed off-label and needs a compounding pharmacy. Different…
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Journal club: STEP 1 and the treatment-policy estimand — does this still hold? Replied, post #66 · Evidence › Journal club · 14 Jul 2026 · 0 likes Counterpoint on STEP 1, offered without confidence: the same observation is consistent with a much duller explanation, and nobody has ruled the dull one out.
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Why cagrilintide alone is discussed so much less than in combination — does this still… Replied, post #20 · Compounds › Cagrilintide & amylin analogues · 7 Jul 2026 · 1 like Appreciated. The plain phrasing does more work here than a longer post would.
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How much context is too much context in a first post? Replied, post #10 · Start Here › How to Ask · 4 Jul 2026 · 11 likes That is a fair summary of where the discussion has got to.
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Why retatrutide discussion here is more cautious than elsewhere — one year on Replied, post #35 · Compounds › Retatrutide · 3 Jul 2026 · 11 likes Worth separating two things that post #33 runs together. Adding the boring version of retatrutide discussion, because the interesting version keeps getting posted and…
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Carryover and the ghost peak from last week's standard — what changed since Replied, post #97 · Analytics › HPLC & UHPLC · 2 Jul 2026 · 4 likes This is the sort of exchange that makes the archive worth searching.
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[2026 update] A vial that will not fully dissolve: what to check and in what order Replied, post #128 · Practice › Reconstitution · 24 Jun 2026 · 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…
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Submitting a sample: the process end to end Replied, post #36 · Sourcing › Independent verification · 24 Jun 2026 · 6 likes Adding a data point of agreement rather than a data point.