I get my Lantus & Novolog from the VA which insists in shipping by UPS overnight by 10:30 am delivery rather than allowing it to be picked up at a nearby VA pharmacy. UPS leaves it on my front step in 90 degree temps in full sun and it may sit for an hour or so before it can be brought inside and refrigerated. When opened from the Styrofoam package the ice packs have fully melted and are at low 60 degrees when checked with a meat thermometer. Are all five pens in the package good until the printed normal expiration date for refrigerated insulin, or just for the 28 day period that applies when stored at room temperature?