Page 7 of 19 · 438 questions tagged content-assay.
The case in front of me: a quantified content assay · liraglutide. I would like the axes of comparison first and the recommendation second. I have tried the first…
I am comparing a supplier certificate against an independent result on the same lot. Please show the division. I want to check my own against yours. I would like the…
I am comparing a supplier certificate against an independent result on the same lot. I have worked this out and I would like someone to find the error, because I…
Setup, so nobody has to ask: 97.6% · a GLP-1 receptor agonist · HJ. I am trying to build something sustainable rather than something thorough that I will abandon. I…
Numbers first: cagrilintide · 2.5 mg/mL. This should be a straightforward calculation and I keep getting two different answers. The numbers are arbitrary; the method…
For reference: deamidation · survodutide · 25 °C. I understand the observation; what I do not understand is the mechanism behind it. I have read the two review…
Details up front: hydrolysis · dulaglutide · 4 °C. I suspect the usual explanation for this is wrong, or at least incomplete. I am aware this may have a boring…
What I have: racemisation · orforglipron · 37 °C. I can predict the outcome but I cannot explain it, which means I will get the next case wrong. I would like to know…
Conditions: QST · tirzepatide. I have two candidate explanations and no way to distinguish them. The same procedure has worked without incident several times…
The particulars: peptide mapping · survodutide. I would like to define my thresholds before I have a result, for obvious reasons. I want a plan with explicit stopping…
Stated plainly: 5 mg · a GLP-1 receptor agonist. The units are where I keep going wrong, so please be explicit about them. I have sanity-checked the order of…
What I have: JEEP · orforglipron. Before I write this off, I want to check whether it is a known failure mode. I have the lot number, the certificate and the date,…
The case in front of me: 10 mg · tirzepatide. Please show the division. I want to check my own against yours. I would like the general form as well as the specific…
The specifics, since they change the answer: 4 mg · semaglutide. I would like the arithmetic checked rather than the conclusion asserted. I have deliberately not used…
The case in front of me: HJ · tirzepatide. I think I have a problem. I am not yet sure whether it is a real problem or a measurement artefact. I want to know whether…
Details up front: hydrolysis · retatrutide · 4 °C. I suspect the usual explanation for this is wrong, or at least incomplete. I am aware this may have a boring…
Setup, so nobody has to ask: aggregation · mazdutide · 30 °C. The empirical answer seems settled. The explanation does not. If the honest answer is that nobody knows,…
For reference: 4 mg · survodutide. I would rather understand the derivation than memorise the outcome. Two people I asked gave two answers that differ by a factor of…
The case in front of me: 40 mg · oral semaglutide. I want the working, not the result — I need to be able to redo it with different numbers. I care about the…
What I am working with: 60 mg · mazdutide. I have worked this out and I would like someone to find the error, because I suspect there is one. My working so far, for…
Concretely: a Karl Fischer water content test · liraglutide. These are treated as interchangeable and I do not think they are. If both are acceptable I would like to…
The specifics, since they change the answer: GGPeps · semaglutide. I want to understand what this actually establishes, as opposed to what it is being used to imply.…
I have the report as a PDF with the chromatogram on page two, so I can quote specifics. I can predict the outcome but I cannot explain it, which means I will get the…
Numbers first: hydrolysis · dulaglutide · 37 °C. I suspect the usual explanation for this is wrong, or at least incomplete. I am aware this may have a boring answer.…