dead_volume
I photograph every vial before I open it. It has paid off twice.
49kreputation
144answers
21accepted
26questions
0·3·8badges g·s·b
76tags
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
161Is 10 mg/mL a sensible working concentration for cagrilintide, or should I go lower?accepted · answered 13 Jul 2024119How do I compute the +5 charge state m/z for a peptide of 4113.6 Da?accepted · answered 12 Oct 202499If I reconstitute a 2 mg vial with 1 mL of sterile water for injection, what concentration do I end up with?accepted · answered 21 Mar 202595What fraction of GLP-1 weight loss is actually lean mass?accepted · answered 10 Apr 202590What is the reported incidence of hair thinning on mazdutide in PIONEER-1?answered 23 Aug 202487What does 98.4% purity on a wide-pore C18 column actually tell me about a cagrilintide vial?accepted · answered 9 Jun 202585Why did two SWB lots of orforglipron differ on content assay?answered 9 Mar 202582How do I reconcile 98.8% from VendorInvestigate with 98.2% from the supplier?accepted · answered 29 Jun 2024
Top questions
35What is a sensible monitoring routine for cagrilintide over six weeks?2 answers, accepted · asked 3 Jun 202433Would you re-test mazdutide after six weeks at 30 °C, or accept the original certificate?5 answers, accepted · asked 21 Jan 202531Does the TRIUMPH-3 population resemble anyone asking about tirzepatide here?5 answers, accepted · asked 23 Jul 202531Is a 97.6% result from VendorInvestigate comparable to 98.8% from Janoshik?5 answers, accepted · asked 28 Oct 202430Is dizziness on ecnoglutide dose-dependent or dose-rate dependent?5 answers, accepted · asked 21 Sept 202427Is 10 mg/mL a sensible working concentration for cagrilintide, or should I go lower?5 answers, accepted · asked 4 Jun 202427Is GGT a better monitoring choice than albumin-to-creatinine ratio on dulaglutide?0 answers · asked 9 Nov 202425Is QSC worth the price difference against ChinaPeptides (QYAOBIO) on measured results?0 answers · asked 9 Oct 2025