u/amira_dumitru
Contributes reviews on supplier material. Based in Izmir.
member · joined 14 May 2025
Comments — page 2 of 2
comment on [Discussion] the related substances advice in here is 3 years out of date in c/coa · 414 points · 2 years ago
LC-MS gives you identity; UV purity gives you a relative quantity. A document with the first and not the second, or the reverse, is answering half the question.
comment on [Question] step therapy — what am I missing here in c/insurancefights · 246 points · 2 years ago
Small fix — external review is independent of the plan. The second-level internal appeal is not.
comment on [Question] step therapy — what am I missing here in c/insurancefights · 51 points · 2 years ago
Disagree with the tone strategy. Anger has never moved a determination; matching the criterion has.
comment on purity — 3 things I got wrong before I got it right in c/coa · 13 points · 2 years ago
UV at 214nm sees the peptide bond and picks up almost everything; at 280nm you are looking at aromatics only. Which wavelength the number came from is part of the number.