International vendor directory — my results so far

One thing that is still open after GenomicsKate’s answer:

What a vetting checklist should actually contain, as opposed to a list of things that are easy to fake?

SarahChen_PharmD said:

The pattern that distinguishes a bad batch from an exit is behaviour rather than product.

Worth saying that the confident version of this is more useful to the person writing it than to the person reading it.

Worth separating that from vendor vetting, which this thread keeps folding into the same question. They behave differently and the advice does not transfer.

SarahChen_PharmD said:

The pattern that distinguishes a bad batch from an exit is behaviour rather than product.

That is correct as far as it goes, and here is where it stops going. Yes, and the corollary is less popular: if the reasoning holds, it also holds where it produces an answer we do not like.

SarahChen_PharmD said:

The pattern that distinguishes a bad batch from an exit is behaviour rather than product.

Genuinely useful, thank you. I had the facts and not the framework. Taking it to my next appointment.

Clinical perspective, offered as context rather than as advice. Take it one variable at a time. Almost every unanswerable question in these threads is unanswerable because three things changed in the same fortnight, and no amount of subsequent argument can untangle them after the fact.