stability is the most under-discussed thing on this board
stability is the most under-discussed thing on this board. Not a hot take, just something I have not seen said plainly here. Wrote the reconstitution date on the vial for the first time last year. Have never once since wondered how old a solution is. Kept a vial at room temperature for eleven days by accident. Tested…
What actually matters, in order, because these threads always start at the wrong end.
State first: dry powder is comparatively robust, reconstituted solution is not. Most of the anxiety here is about powder and most of the real risk is about solution.
Then evidence: a warm gel pack is evidence about the pack. A logger is evidence about the box. Only a test is evidence about the material. People routinely reason from the first to the third and it does not follow.
Then prevention, which is dull and effective: shorter lanes where regional stock exists, rigid packaging, the middle of the fridge rather than the door, and the reconstitution date written on the glass.
A stability statement is only meaningful with its conditions attached: temperature, duration, light exposure, and whether it covers powder or solution. Ask which.
A stability statement is only meaningful with its conditions attached: temperature, duration, light exposure, and whether it covers powder or solution
This is the distinction that resolves most threads here — powder and solution are different problems.
Asked QST which lines they hold regionally and got a straight list back. That answered my summer ordering question completely.
Put a logger in three consecutive orders. Two never went above the range at all and the third spent four hours warm on a Friday. Cost me almost nothing to stop wondering.
Correcting myself above: the transit was 10 days, not the figure I posted. Same conclusion, wrong number.