MedicationsQuestion 31 of 100
How should unopened vials of insulin glargine be stored in the pharmacy?
a.In the freezer at -10 °C
b.At room temperature only, discarded after 7 days
c.In the refrigerator at 2-8 °C, protected from freezing
d.In a warming cabinet at 30-35 °C
Explanation
Unopened insulin is stored in the refrigerator at 2-8 °C, where it remains stable until the manufacturer's expiration date. Freezing denatures insulin and makes the vial unusable, and prolonged storage at warm temperatures shortens potency well before the labeled expiration.
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