b_delacroix
Sceptical of anything without a lot number.
43kreputation
150answers
19accepted
16questions
0·3·8badges g·s·b
66tags
Badges
Second Opinion25 answers on a question that already had an accepted answer
DeconvolutedAnswered 15 questions tagged mass-spec or lc-ms
QuorumReached 5,000 reputation
Asked WellA question with a score of 10 or more
First AcceptFirst answer marked as accepted
Citation NeededTen answers carrying a published citation
EditorFirst post edit
CommentatorLeft 30 comments
AutobiographerCompleted a profile
Tag WranglerActive in 8 or more distinct tags
Sample SubmittedPosted an independent third-party test result
Top answers
110Is a QST order from Zhuhai likely to hold cold chain to Singapore?accepted · answered 19 Sept 2024104What has PeptideMeter published on Homopeptide lots in the last year?accepted · answered 28 Jun 2025103How do I compare WXT and WWB on lead time to South Africa?answered 24 Jul 202499Would you re-test oral semaglutide after three weeks at minus 80 °C, or accept the original certificate?accepted · answered 17 Sept 202481Is a 96.4% result from Medutest comparable to 98.4% from PeptideMeter?accepted · answered 29 Jul 202478How do I compare MKM and QST on lead time to Canada?answered 22 Nov 202478What does VendorInvestigate verification of Zhuhai Kerui Biotechnology actually cover?answered 17 Mar 202574Is an ERP order from Hangzhou likely to hold cold chain to South Africa?accepted · answered 4 Jul 2024
Top questions
37Is an 18G drawing needle the right choice for drawing orforglipron at 20 mg/mL?5 answers, accepted · asked 29 Jul 202434Is lipase worth drawing at baseline before starting a GLP-1 receptor agonist?5 answers, accepted · asked 27 Mar 202532Why is every label titration step four weeks, and what actually sets that interval?3 answers, accepted · asked 18 Jun 202425What counter-ion should I expect on an FGP a GLP-1 receptor agonist lot?3 answers, accepted · asked 14 Oct 202424How comparable are tirzepatide and retatrutide on the evidence available?3 answers · asked 4 Sept 202522How much of the gross mass of a 10 mg tirzepatide vial is actually peptide?5 answers · asked 28 Mar 202620What happens to cagrilintide after sixteen weeks at minus 20 °C in solution?4 answers, accepted · asked 20 May 202618Does aggregation dominate for mazdutide held at minus 80 °C?5 answers, accepted · asked 7 May 2024