Storage and transport of insulin pen
Many millions of insulin vials, prefilled pens, and
cartridges are either in transport maintaining the cold
chain, in storage in temperature-controlled warehouses,
or in monitored and unmonitored pharmacy refrigerators
around the country, or placed in unmonitored domestic
refrigerators at homes, offices, schools, hospital wards,
and clinics, packed into pockets, purses, bags, backpacks,
briefcases of patients with diabetes (PwD), stashed in
glove compartments of cars and in overhead bins of
aircraft and at many times left on dining tables, bedside
tables, sideboards, cupboards, kitchens, bathrooms and
assorted places in the homes of PwD.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC102453
05/#:~:text=Unused%20insulin%20should%20be%20stor
ed,C%2D8%C2%B0C).&text=After%20first%20usage%2C
%20an%20insulin,of%20use%20in%20room%20temperat
ure.