j_wierzbicki
Statistics background. I read confidence intervals before headlines.
69kreputation
218answers
43accepted
18questions
1·4·8badges g·s·b
66tags
34Why does aspartimide formation accelerate at 40 °C rather than proceeding linearly?4 answers, accepted · 29k views · peptide-stability, storage, hplc32What does SURMOUNT-2 tell me about nausea at the 10 mg dose?0 answers · 26k views · clinical-trials, nausea, titration30How long does a Hangzhou to South Africa lane usually take with tracking?5 answers, accepted · 46k views · international-shipping, customs, cold-chain30What does 98.8% purity on a C8 column actually tell me about a tirzepatide vial?0 answers · 9.1k views · hplc, purity, coa29Would you accept 98.8% on orforglipron from GL Biochem without a content assay?5 answers, accepted · 13k views · purity, content-assay, vendor-vetting28How many vials from an SSA lot should I send for a residual-solvent screen?5 answers, accepted · 33k views · batch-testing, coa, cost-analysis28Is there any published stability data for liraglutide at 40 °C?0 answers · 28k views · peptide-stability, storage, clinical-trials27Why would PeptideMeter report 97.6% where the supplier certificate says something higher?0 answers · 17k views · purity, hplc, batch-testing26Is 97.9% a realistic purity ceiling for ecnoglutide given its chain length?5 answers, accepted · 32k views · purity, hplc, peptide-mapping23How does Homopeptide compare to Shanghai Wibson Biotechnology on documentation quality?5 answers · 33k views · vendor-comparison, coa, vendor-vetting19Is a 31G needle the right choice for drawing dulaglutide at 5 mg/mL?0 answers · 8.4k views · needle-gauge, injection-technique, dead-space19What does STEP 4 actually establish about semaglutide?5 answers, accepted · 16k views · clinical-trials, semaglutide, cardiovascular17Does LDL-C tell me anything about hepatic fat on mazdutide?5 answers, accepted · 17k views · liver-enzymes, mash, bloodwork16Is identity confirmation by mass spectrometry worth paying for on top of a purity figure for survodutide?0 answers · 6k views · content-assay, batch-testing, cost-analysis6How many times can I pierce a stopper with an 18G drawing needle before coring?5 answers, accepted · 18k views · needle-gauge, sterility, vial-inspection5Is an insulated cool box good enough for storing reconstituted oral semaglutide?5 answers, accepted · 7.8k views · storage, cold-chain, harm-reduction4Why would Medutest report 98.2% where the supplier certificate says something higher?5 answers, accepted · 16k views · purity, hplc, batch-testing2What counter-ion should I expect on a BCH mazdutide lot?5 answers, accepted · 10k views · acetate-content, purity, content-assay