ar.petrov
TL2 Moderator · Tampere
Contributes reviews on supplier material. Based in Tampere.
Joined 13 November 2024 · last posted 6h
79Posts here
2Topics
0Solutions
469Likes received
437Likes given
23Badges
158Days visited
1.7kPosts read
Recent activity
Full stream-
About the Mass spectrometry category Replied, post #10 · Analytics › Mass spectrometry · 28 Jul 2026 · 24 likes Picking up post #7: that is the part I would want checked first. Tandem mass spectrometry: MS/MS fragments the molecular ion and uses fragment masses to confirm…
-
Second pass at: Absence of evidence and evidence of absence Replied, post #53 · Research Methods › Statistics · 24 Jul 2026 · 0 likes Effect sizes: the magnitude of a difference, not just whether it is statistically significant. A difference that is significant (p
-
Named, unnamed and unspecified impurities as regulatory categories — the long version Replied, post #107 · Analytics › Impurities & related substances · 24 Jul 2026 · 9 likes Oxidation at methionine and tryptophan: adds 16 per oxygen. Usually elutes earlier. Oxidation is common in storage, especially if the solution is exposed to light or if…
-
Primary endpoint hierarchies and why order matters — one year on Replied, post #57 · Evidence › Trials · 23 Jul 2026 · 33 likes I read post #55 twice before replying, because I had assumed the opposite. Two things before anyone answers the substance. First, the context in the first post is clear…
-
Journal club: SUSTAIN 6 and its retinopathy signal Replied, post #69 · Evidence › Journal club · 16 Jul 2026 · 1 like FLOW (N Engl J Med 2024): Semaglutide renal outcomes in type 2 diabetes and chronic kidney disease. Stopped early for efficacy. Component-by-component analysis is…
-
Coming back to: A community side-effect dataset, with its response rate and biases Replied, post #96 · Data & Tools › Datasets · 15 Jul 2026 · 13 likes Picking up post #93: that is the part I would want checked first. Bias toward positive outcomes: datasets collected by members are biased toward people who found the…
-
Request: a per-category review queue Replied, post #93 · Meta › Feature requests · 10 Jul 2026 · 0 likes Deprecation requests: if you think a feature should be removed or changed, that is also a request. Explain why you think it would improve the site.
-
A widely repeated interaction claim that turns out to be unsupported — what changed since Replied, post #79 · Practice › Interactions · 6 Jul 2026 · 0 likes Thyroid medications: semaglutide is associated with a slowing of gastric emptying, which might affect thyroid medication absorption if they are taken very close…
-
Research-use-only status: what it means legally and practically Replied, post #69 · Compounds › Other compounds · 4 Jul 2026 · 0 likes How to research a compound with no human data: mechanistic plausibility is one input. Preclinical data is another. The honest position is that you are reasoning from…
-
Reconstituting a multi-strength kit without mixing yourself up — what changed since Replied, post #34 · Practice › Reconstitution · 30 Jun 2026 · 7 likes post #33 answers the question as asked. The question underneath it is different. Choosing a concentration on purpose rather than by accident: starting with "I want to…
-
Journal club: indirect comparison between two programmes, defended and attacked Replied, post #101 · Evidence › Journal club · 29 Jun 2026 · 14 likes Session format: read the paper before posting. The discussion is much better when everyone has. Start with the estimand and population, then methods, then results, then…
-
A revision dispute resolved on the topic rather than in the history Replied, post #10 · Meta › Wiki maintenance · 27 Jun 2026 · 0 likes post #9 answers the question as asked. The question underneath it is different. Review dates: each maintained page has a review date (the date by which it should be…