[Discussion] the related substances advice in here is 3 years out of date
the related substances advice in here is 3 years out of date. It is the sort of thing everyone half-believes and nobody writes down. 3 years — those are the numbers, and they are the ones I am willing to defend. Related substances itemised individually is a much stronger document than a single total, because it tells…
Does the lot on the vial match the lot on the page?
post the whole document, not the headline number
Asked QSC for the batch-specific certificate and had the full document — batch, date, method line naming the column — inside six hours. That is now my baseline for everybody.
Does the lot on the vial match the lot on the page?
Disagree on this specific point. Two honest labs can resolve that impurity differently and report different numbers.
Not quite. Two labs with different gradients can resolve a close-eluting impurity differently and both be reporting honestly.
Agreed on asking for the storage condition. It is one line and it changes how you read the entire stability claim.
Yes. The structure of the document matters at least as much as the number printed on it.