d.ferreira
TL2 Moderator · Bochum
Contributes reviews on supplier material. Based in Bochum.
Joined 17 June 2025 · last posted 1d
93Posts here
2Topics
0Solutions
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Most-liked posts
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How shortages have affected compounding permissions Replied, post #19 · Access › Shortages · 6 Jul 2026 · 32 likes Patient advocacy during shortages: some advocacy groups advocate for patients during shortages. Knowing who they are and following their communication is useful.
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"Greater than or equal to 99%" as a specification rather than a result Replied, post #10 · Analytics › COA interpretation · 22 Jul 2025 · 32 likes Endotoxin testing is separate: a certificate of purity says nothing about endotoxin. A chemically pure preparation can carry a clinically significant endotoxin load. If…
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How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ — a second dataset Replied, post #42 · Sourcing › Independent verification · 28 Apr 2026 · 30 likes For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add the caveats that make it safe to use.
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Repeatability versus intermediate precision Replied, post #78 · Analytics › Method validation · 27 Jun 2025 · 28 likes Accuracy: the method measures what you intend to measure. For purity methods, this is tested by spike-and-recover experiments: add a known amount of impurity to a…
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[2026 update] A vial that will not fully dissolve: what to check and in what order Replied, post #68 · Practice › Reconstitution · 23 May 2026 · 27 likes On post #64 — agreed on the reasoning, with one qualification. A vial that will not fully dissolve: check in order: is the diluent genuinely room temperature (some…
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Personal import allowances, compared — a second dataset Replied, post #47 · Access › International · 5 Jan 2026 · 27 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…
Where this member posts
Badges earned, in order
| Badge | Tier | Granted |
|---|---|---|
| Basic User | bronze | 18 Jun 2025 |
| Welcome | bronze | 19 Jun 2025 |
| First Reply | bronze | 20 Jun 2025 |
| Asked Well | bronze | 21 Jun 2025 |
| Read the Guidelines | bronze | 23 Jun 2025 |
| Generous | bronze | 5 Jul 2025 |
| First Topic | bronze | 11 Jul 2025 |
| First Quote | bronze | 15 Jul 2025 |
| First Link | bronze | 20 Jul 2025 |
| Member | bronze | 3 Aug 2025 |
| First Tag | bronze | 7 Aug 2025 |
| Sourced | bronze | 20 Aug 2025 |
| Editor | bronze | 6 Sep 2025 |
| Reader | bronze | 16 Sep 2025 |
| Consistently Generous | silver | 20 Sep 2025 |
| Welcoming | silver | 25 Sep 2025 |
| Good Post | silver | 28 Sep 2025 |
| Nice Topic | bronze | 1 Nov 2025 |
| Nice Post | bronze | 3 Nov 2025 |
| Gives Back | gold | 18 Feb 2026 |
| Thank You | silver | 1 Mar 2026 |
| Anniversary | silver | 17 Jun 2026 |
| De-escalator | gold | 27 Jul 2026 |