[Discussion] the excursion advice in here is 2 years out of date
the excursion advice in here is 2 years out of date — a position I have arrived at slowly and would like tested.
To save the first four comments: 2 years.
Once in solution, the relevant risks are hydrolysis, aggregation and, for some sequences, oxidation. Refrigeration slows all three; freezing a solution introduces a separate risk at the ice interface.
Lyophilisation removes the water that drives most degradation pathways. That is why the dry cake is comparatively robust and the reconstituted solution is not.
Screenshot none of this. Read the whole thread, including the parts where I am told I am wrong.
best — the order this archive was captured in
Tracking number redacted. It identifies both ends of a shipment and that rule has no exceptions.
Not convinced. A warm pack on day six is expected behaviour from a pack designed for four.
ask which lines are held in regional stock before you order in July
Regional stock changes the question rather than answering it: shorter lanes mean less exposure and fewer variables, which is why the warehouse question is worth asking before ordering in summer.
What was the packaging — rigid outer, gel packs, anything insulating?
Powder or already in solution?
That is a lane problem rather than a packaging problem, and the fixes are different.
How many days in transit, and which month?
Right, and asking what the stability statement was written against is one line of email that reframes everything.
Careful. "The cold chain failed" is a strong claim and the evidence you have is a warm box.
Which lane, and had it been quoted at that transit time?
Do you know what storage condition the stability statement covers?
Asked MKM which lines they hold regionally and got a straight list back. That answered my summer ordering question completely.
Is this a line they hold in regional stock or is it shipping from origin?
Kept a vial at room temperature for eleven days by accident. Tested it out of guilt. It was fine.
Split an order across two months deliberately to compare summer and winter transit on the same lane. Four days difference, same carrier.
Push back: you cannot infer degradation from a temperature excursion alone. That is what testing is for.
- 1That is a lane problem rather than a packaging problem, and the fixes are…6 comments in this branch · started by u/isabela_nilsen