v.krastev

TL2 · Gdańsk

Contributes reviews on supplier material. Based in Gdańsk.

Joined 29 April 2025 · last posted 15d

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What is genuinely unknown about long-term amylin agonism Replied, post #31 · Compounds › Cagrilintide & amylin analogues · 13 Jul 2026 · 0 likes Coming back to post #27, because the follow-up matters more than the original answer. Cagrilintide is a long-acting amylin analogue, which puts it in a different…
The headache that turns out to be dehydration — the long version Replied, post #59 · Nutrition & Training › Hydration & electrolytes · 30 Jun 2026 · 0 likes Reading back through, this was answered upthread and I missed it. My fault.
Endotoxin and why it is a separate question from purity — what changed since Replied, post #54 · Analytics › Impurities & related substances · 22 Jun 2026 · 0 likes Residual solvents: traces of solvents used in purification. These are usually tested by gas chromatography, not by HPLC. A specification for residual solvents should be…
[2026 update] Interpreting a result that disagrees with the supplier's certificate Replied, post #33 · Sourcing › Independent verification · 21 Jun 2026 · 4 likes Worth separating two things that post #29 runs together. I disagree with the framing of Interpreting a result above, and I think it is a substantive disagreement rather…
[2026 update] Area percent versus weight percent: the confusion that causes most arguments Replied, post #58 · Analytics › HPLC & UHPLC · 15 Jun 2026 · 18 likes If two laboratories disagree by more than two or three percentage points, work through method, integration, sample handling, whether it was the same lot and the same…
Follow-up: Prior authorisation: what the criteria usually require Replied, post #17 · Access › Insurance & coverage · 12 Jun 2026 · 5 likes I read the earlier replies on Prior authorisation twice before writing this, because I had assumed the opposite and wanted to be sure I was disagreeing with what was…
Coming back to: Time to steady state after a dose increase Replied, post #74 · Pharmacology › Pharmacokinetics · 11 Jun 2026 · 4 likes A pharmacokinetic model fitted to trial data describes the population studied. Applying it to somebody outside the enrolled range is an extrapolation, and the model…
Designing a personal experiment that could change your mind — one year on Replied, post #58 · Research Methods › N-of-1 designs · 9 Jun 2026 · 0 likes Designing a personal experiment that could actually change your mind: that is the standard for an n-of-1 design. An experiment designed so that any result confirms what…
[2026 update] Storing lyophilised material long term: what governs the shelf life Replied, post #129 · Practice › Storage & stability · 6 Jun 2026 · 2 likes Adding a note of thanks rather than an opinion. I did not know most of that.
Follow-up: Tirzepatide and nausea: is the profile genuinely different or just… Replied, post #110 · Compounds › Tirzepatide · 31 May 2026 · 27 likes Tirzepatide's half-life of roughly five days means steady state is approached in about three weeks rather than four. That is a real difference from semaglutide and it…
Batch numbers that do not match the vial label — what changed since Replied, post #20 · Sourcing › Red flags · 23 May 2026 · 0 likes The guidelines draw that line for a practical reason as much as a fair one: reports accumulate into something useful and allegations do not. Posted with less confidence…
Reading a trial's population section before its results Replied, post #5 · Evidence › Trials · 7 May 2026 · 20 likes Taking post #2 at face value and following it one step further. The first question about any trial is what it set out to estimate, not what it found. Once the estimand…