au.pereira

TL2 Moderator · Salvador

Contributes reviews on supplier material. Based in Salvador.

Joined 25 February 2025 · last posted 2d

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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 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…
Immortal time bias in a claims-database study — one year on Replied, post #37 · Evidence › Study critique · 22 Jul 2026 · 15 likes Building consensus on which criticisms matter: if everyone agrees that the sample size is small but only you think that affects the conclusion, maybe your criticism is…
How shortages have affected compounding permissions Replied, post #51 · Access › Shortages · 19 Jul 2026 · 10 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…
Deletion sequences: expected mass shifts by residue — the long version Replied, post #13 · Analytics › Impurities & related substances · 16 Jul 2026 · 16 likes I read post #11 twice before replying, because I had assumed the opposite. Disulfide formation: if a peptide contains cysteine, it can form disulfide bonds with itself…
What to bring: records that a clinician can actually use Replied, post #2 · Clinical › Prescriber conversations · 15 Jul 2026 · 3 likes Discussing off-label dosing: if you want to dose differently than the label specifies (slower titration, higher final dose), discussing that explicitly and…
Journal club: STEP 1 and the treatment-policy estimand — does this still hold? Replied, post #66 · Evidence › Journal club · 14 Jul 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…
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 Picking up post #17: that is the part I would want checked first. Gastric emptying: both amylin and GLP-1 slow it, through partly overlapping but distinct mechanisms.…
How much context is too much context in a first post? Replied, post #10 · Start Here › How to Ask · 4 Jul 2026 · 11 likes Avoid "any advice?" at the end. It is so generic that people do not know which part of the post it refers to. Pick the specific part and ask that specific question…
Why retatrutide discussion here is more cautious than elsewhere — one year on Replied, post #35 · Compounds › Retatrutide · 3 Jul 2026 · 11 likes Coming back to post #33, because the follow-up matters more than the original answer. Practical note that does not fit anywhere else. Whatever you conclude from this…
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 follows post #94 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…
[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 Why "add 2 mL" is not an instruction: the powder in the vial takes up space. "Add 2 mL to a 10 mL vial" and "add 2 mL of diluent so the final volume is approximately 2…
Submitting a sample: the process end to end Replied, post #36 · Sourcing › Independent verification · 24 Jun 2026 · 6 likes Picking up post #33: that is the part I would want checked first. VendorInvestigate: documentation and supplier-practice review. Reviews paperwork rather than vials.…