j.petrov
TL2 Moderator · Kuopio
Contributes reviews on supplier material. Based in Kuopio.
Joined 9 July 2025 · last posted 13h · groups: translators
86Posts here
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Hello from a laboratory that does not do peptides — does this still hold? Started this topic · Lounge › Introductions · 3 Nov 2024 · 60 likes Asking directly, because I could not find a straight answer: Hello from a laboratory that does not do peptides — does this still hold? Lower-stakes topic, but the…
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[2026 update] Detection wavelength and why 214 nm and 280 nm disagree Replied, post #76 · Analytics › HPLC & UHPLC · 27 Jul 2026 · 32 likes Detection wavelength: 214 nm detects the peptide bond and is relatively insensitive to composition. 280 nm detects aromatic residues and is strongly…
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Second pass at: Leak-back after withdrawal and whether you lost a meaningful dose Replied, post #23 · Practice › Administration · 3 Jul 2026 · 31 likes Injecting into an area that has become firm: lipohypertrophy — thickened fatty tissue from repeated injection in one area — changes local tissue absorption. Avoid…
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Batch numbers that do not match the vial label — what changed since Replied, post #12 · Sourcing › Red flags · 12 May 2026 · 31 likes Inability to trace lots: if you ask "where was this synthesised, by whom, under what conditions" and cannot get a clear answer, that is a red flag. Traceability is not…
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Second pass at: Pregnancy and pregnancy planning: contraindication and washout Replied, post #82 · Clinical › Special populations · 25 Jan 2026 · 30 likes Medullary thyroid carcinoma history: an absolute contraindication because of the preclinical findings in rodent toxicology. The history (personal or family, especially…
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Anxiety in the first weeks: drug, situation, or both Replied, post #91 · Wellbeing › Mental health · 21 May 2025 · 29 likes Motivation and expectation: starting with clear motivation and realistic expectations about what will happen and when helps with psychological adjustment.
Where this member posts
Badges earned, in order
| Badge | Tier | Granted |
|---|---|---|
| Basic User | bronze | 10 Jul 2025 |
| Read the Guidelines | bronze | 12 Jul 2025 |
| First Reply | bronze | 17 Jul 2025 |
| First Topic | bronze | 18 Jul 2025 |
| First Quote | bronze | 18 Jul 2025 |
| Welcome | bronze | 23 Jul 2025 |
| Asked Well | bronze | 30 Jul 2025 |
| First Link | bronze | 1 Aug 2025 |
| Editor | bronze | 10 Aug 2025 |
| First Solution | bronze | 13 Aug 2025 |
| Reader | bronze | 15 Aug 2025 |
| First Tag | bronze | 16 Aug 2025 |
| Nice Topic | bronze | 20 Aug 2025 |
| Nice Post | bronze | 28 Aug 2025 |
| Member | bronze | 30 Aug 2025 |
| Generous | bronze | 15 Sep 2025 |
| Sourced | bronze | 21 Sep 2025 |
| First Vendor Report | bronze | 24 Sep 2025 |
| Popular Link | silver | 19 Oct 2025 |
| Great Post | gold | 10 Dec 2025 |
| Great Topic | gold | 3 Feb 2026 |
| Good Post | silver | 12 Feb 2026 |
| Good Topic | silver | 27 Mar 2026 |
| De-escalator | gold | 6 Jul 2026 |
| Anniversary | silver | 9 Jul 2026 |