Page 4 of 20 · 476 questions tagged content-assay.
What I have: racemisation · retatrutide · 40 °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…
What I am working with: BCH · mazdutide. This is not behaving the way I expected and I want to understand the discrepancy before I act on it. I have photographed the…
Numbers first: mazdutide · 1 mg/mL. This should be a straightforward calculation and I keep getting two different answers. The numbers are arbitrary; the method is…
Setup, so nobody has to ask: a residual-solvent screen · cagrilintide. I suspect the honest answer is that it depends, in which case I would like to know on what.…
The particulars: KP · orforglipron. I have a result I cannot explain, and I would rather diagnose it than guess. I have checked the obvious explanations and…
Numbers first: 96.4% · dulaglutide · MKM. I would rather over-plan the first cycle and simplify later. I am prepared to do the work if someone can tell me which work…
The specifics, since they change the answer: dimerisation · cagrilintide · room temperature. I keep seeing this stated as a fact with no explanation attached, and…
Concretely: QST · liraglutide. 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 this is…
The case in front of me: CPC · 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…
The case in front of me: 10 mg · liraglutide. I want the working, not the result — I need to be able to redo it with different numbers. I care about the precision as…
The lot number on the vial matches the certificate, which at least rules out the easy problem. I keep seeing this stated as a fact with no explanation attached, and…
I have both a purity figure and a content figure, which is why the discrepancy is visible. I would like the mechanism, because I want to be able to reason about the…
Details up front: racemisation · dulaglutide · minus 20 °C. I can predict the outcome but I cannot explain it, which means I will get the next case wrong. I would…
Conditions: 97.1% · liraglutide · BCH. The failure mode I am trying to avoid is making this decision emotionally. I have twelve months in view and I would like the…
Numbers first: 98.8% · orforglipron · GL Biochem. This is a planning question. I know what my options are; I do not know how to weigh them. What I want is the minimum…
For reference: SWB · dulaglutide. I have a result I cannot explain, and I would rather diagnose it than guess. I have checked the obvious explanations and eliminated…
Details up front: a GLP-1 receptor agonist · 2.5 mg/mL. This should be a straightforward calculation and I keep getting two different answers. The numbers are…
Concretely: KP · retatrutide. I can parse the result. I am less sure what it licenses me to conclude. I have deliberately not looked at anyone else’s interpretation…
What I have: hydrolysis · orforglipron · 40 °C. I suspect the usual explanation for this is wrong, or at least incomplete. I am aware this may have a boring answer. I…
The specifics, since they change the answer: 99.1% · semaglutide · SGN. I would like to define my thresholds before I have a result, for obvious reasons. I want a…
The specifics, since they change the answer: BCH · cagrilintide. I have read the primary source rather than the summary, which has left me with more questions. I…
For reference: QST · oral semaglutide. I have two candidate explanations and no way to distinguish them. The same procedure has worked without incident several times…
Costs, fees and monitoring all included, I am trying to compare like with like. I suspect the usual explanation for this is wrong, or at least incomplete. I am aware…
Conditions: 98.4% · oral semaglutide · BCH. I want to decide this in advance so that I am not deciding it under pressure later. Assume I will follow the plan I write…