CVS Pharmacy Technician Certification Practice Test

Where must insulin be stored?

1. At room temperature

2. In the freezer

3. In the pantry

4. In the refrigerator

The correct answer is: In the refrigerator

Insulin must be stored in the refrigerator to maintain its effectiveness and stability. The cold temperature helps protect the insulin from degradation and ensures that it remains potent for its duration of use. Typically, unopened vials or pens of insulin are kept refrigerated; however, once opened, many formulations can be stored at room temperature for a limited time, usually up to 28 days, to make it more convenient for patients to access and use. Room temperature storage does not offer the same level of preservation as refrigeration, especially for unopened products, while storing insulin in the freezer will result in crystallization of the insulin, rendering it unusable. Keeping it in the pantry is also inappropriate because it lacks the necessary controlled environment provided by refrigeration. The preferred method ensures that insulin remains safe and effective for patients managing their diabetes.