s.roos

TL2 · Turku

Contributes reviews on supplier material. Based in Turku.

Joined 15 November 2024 · last posted 4d

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Coming back to: Time to steady state after a dose increase Replied, post #109 · Pharmacology › Pharmacokinetics · 24 Jul 2026 · 11 likes The arithmetic in post #108 is right; the assumption feeding it is the part to check. Washout after stopping takes roughly the same four to five half-lives as reaching…
[2026 update] Detection wavelength and why 214 nm and 280 nm disagree Replied, post #62 · Analytics › HPLC & UHPLC · 23 Jul 2026 · 4 likes Checked the Detection wavelength claim against the primary source this morning. It survives, with a narrower scope than the version quoted here. Posting the narrower…
Why retatrutide discussion here is more cautious than elsewhere — one year on Replied, post #78 · Compounds › Retatrutide · 20 Jul 2026 · 11 likes Taking post #77 at face value and following it one step further. Retatrutide is investigational. Material obtained outside a clinical trial is research-use-only by…
Spreadsheets: an appreciation — what changed since Replied, post #105 · Lounge › Off topic · 19 Jul 2026 · 0 likes Spreadsheets is worth one more sentence than it usually gets, and the sentence is the one about how the number was arrived at.
Pooling trials with different estimands Replied, post #94 · Evidence › Meta-analyses · 13 Jul 2026 · 6 likes Quality assessment of included trials should change the analysis rather than sit beside it. A sensitivity analysis excluding the weakest studies is the minimum. That is…
Reused chromatograms across lots: how to spot it Replied, post #56 · Analytics › COA interpretation · 10 Jul 2026 · 30 likes The distinction between release testing and characterisation is one industrial documents make and retail ones usually do not. It is the difference between "we tested…
[2026 update] Antibiotics and a course of something with delayed emptying Replied, post #12 · Practice › Interactions · 4 Jul 2026 · 2 likes Taking post #11 at face value and following it one step further. Supplements and herbs: many have no established interaction. Some do. If you are taking something…
Muscle cramps: the ordinary causes before the exotic ones — a second dataset Replied, post #29 · Practice › Side effects · 4 Jul 2026 · 0 likes The practical version of Muscle cramps is three sentences long. The rigorous version is three pages and reaches the same conclusion with the conditions attached.
Personal or family history of medullary thyroid carcinoma Replied, post #28 · Safety › Contraindications · 29 Jun 2026 · 0 likes Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants…
Asking a follow-up: new topic or new reply? Replied, post #29 · Start Here › How to Ask · 29 Jun 2026 · 0 likes The question underneath asking a follow-up is usually "how would I tell?" rather than "what is true?", and that one has a method attached to it. Write down what you…
[2026 update] Travelling with an injectable: documentation and practicalities Replied, post #28 · Access › International · 21 Jun 2026 · 4 likes Licensed prescribing: where a compound is approved, prescribing is restricted to licensed prescribers. Where it is not approved, the legality of possession and use is…
Coming back to: Specificity, linearity, accuracy, precision, range, robustness — with… Replied, post #59 · Analytics › Method validation · 19 Jun 2026 · 0 likes Post #55 and I disagree about the size of the effect, not about the direction. Accuracy: the method measures what you intend to measure. For purity methods, this is…