a.pereira
TL2 · Brno
Contributes reviews on supplier material. Based in Brno.
Joined 29 July 2025 · last posted 4d
84Posts here
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[2026 update] Charge states for a 4 kDa peptide, worked through Replied, post #12 · Analytics › Mass spectrometry · 16 Mar 2026 · 32 likes This follows post #11 rather than contradicting it. The arithmetic for a doubly charged species is (M + 2 x 1.00728) / 2, and the analogous expression for higher charge…
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Run-in periods and the population they select Replied, post #46 · Evidence › Trials · 6 Jan 2026 · 32 likes The version of run-in periods that circulates here is a simplification of a simplification. It is not wrong, but it has lost the conditions under which it holds, and…
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A ten-fold dose error caught before injection — one year on Replied, post #96 · Devices › Syringes & needles · 3 Aug 2025 · 32 likes Graduation spacing is worth checking before you buy rather than after. Some 1 mL barrels are marked every two units and some every one, and that changes what doses you…
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Follow-up: Where the four-week escalation interval comes from, and what it is not Replied, post #97 · Practice › Dosing & titration · 4 Nov 2024 · 32 likes I think the four-week escalation interval question is answerable and has not been answered, which is a more optimistic position than most of this thread.
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Choosing which test to pay for, given a fixed budget — does this still hold? Replied, post #3 · Sourcing › Independent verification · 18 Oct 2024 · 32 likes A record with four results over sixteen months is a thin record rather than a bad one, and the honest description says which. I have said this before in a thread nobody…
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Second pass at: Metformin co-administration and additive GI effects Replied, post #115 · Practice › Interactions · 30 May 2026 · 31 likes Metformin co-administration has been discussed here with more heat than it deserves, mostly because two definitions have been in play the whole time.
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Badges earned, in order
| Badge | Tier | Granted |
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