u/sterile_field_steph

write the reconstitution date on the vial

a claim with no batch number is a marketing document

Same view. A record you can read beats a rating you cannot inspect, every time.

The evidence standard on the vendor boards requires a document, a date or a named service behind any claim about a supplier. It is what makes those threads worth reading years later.

Gel pack fully liquid on arrival, powder tested 99.6% against a claimed 99.0% afterwards.

Agreed, and a logger costs less than the vial you are worrying about.

Which lane, and had it been quoted at that transit time?

What was the packaging — rigid outer, gel packs, anything insulating?

Correction: that stability figure covers the lyophilised powder, not the reconstituted solution. Different claim entirely.