Fast acting insulin is only fast acting when it stays cool. If kept at room temperature or higher it will spoil, be less potent, and this can greatly affect the life of a diabetic. Although there is packaging available that can show if something has been exposed to high heat or cold temps, the insulin companies do not make use of it. Is there something that a diabetic can do?
The potential Product: SpoilAlert
How it would work:
Buy your insulin from the pharmacy. Bring it home and use SpoilAlert to test it. The chemical analysis would let you know if your insulin has been through extreme temperatures.
Discussion on how only changing sugar levels and visual inspection can currently be used to test for insulin spoilage:
Thermochromic stickers only $.0001 each:
Simple Thermal paper:http://en.wikipedia.org/wiki/Thermal_paper