u/niels_yilmaz

Push back: comparing a July transit with a February one on the same lane is not a comparison.

A lane is an origin, a destination, a carrier and a season. Change any one and the distribution changes, which is why supplier-level shipping averages are close to meaningless.

Is this a line they hold in regional stock or is it shipping from origin?

Agreed. Reporting by lane rather than by supplier is what made the tables here actually predictive.

regional stock changes everything about transit

Total transit decomposes into first mile, international leg, clearance and last mile. Only the first two are meaningfully under the shipper’s control and most reported variance sits in the last two.

That is the ambient temperature at the destination, not the temperature inside the box. The logger measures the second one.

That is a lane problem rather than a packaging problem, and the fixes are different.

Once in solution, the relevant risks are hydrolysis, aggregation and, for some sequences, oxidation.

anya_salgado is right that the pack failing is not the material failing. Two separate claims.

light matters more than people think for some of these

fridge, not freezer, once it is in solution

This is the distinction that resolves most threads here — powder and solution are different problems.

Do you know what storage condition the stability statement covers?

You cannot infer potency from a temperature record. The record tells you what happened to the box; only a test tells you what happened to the material.

Cosigning the seasonality point. February and August on the same lane are different animals.

Where did the time actually go — international leg, clearance, or last mile?

You cannot infer potency from a temperature record. The record tells you what happened to the box; only a test tells you what happened to the material.

a logger costs less than a vial and answers the question permanently

Right, and the last mile is where my variance has always come from, not the international leg.

This is why the lane table is organised the way it is. The supplier is not the unit.

the last mile is where most of the variance lives

Same lane in a different season for comparison?

regional stock changes everything about transit

Not convinced by four data points. That is not a lane yet, it is an anecdote with a route attached.

Do you know what storage condition the stability statement covers?

declared value and description are the shipper’s decision, ask what they use