Reference ranges differ between labs, so comparing two reports is close to meaningless.

Three month limits are cumulative across parcels in more places than people realise.

Split orders. Two small parcels beat one large one for reasons that have nothing to do with price.

The declaration contradicting the return address is what gets it opened.

Reconstitution arithmetic is only half the problem. The other half is what was in the vial. Currently on LL-37 myself.