What statement made by a client about insulin therapy indicates a need for further teaching?

The statement regarding the storage of unopened insulin in the freezer indicates a need for further teaching because insulin should never be frozen. Freezing can alter the structure and efficacy of insulin, rendering it ineffective. Instead, insulin should be stored in the refrigerator to maintain its potency, and if it is in use, it can be kept at room temperature for a limited time, depending on the type of insulin.

In contrast, the other statements reflect appropriate knowledge and practices related to insulin therapy. Keeping insulin in a cool, dry place is essential to prevent degradation. Checking the expiration date ensures that the insulin remains effective when administered. Rotating injection sites is important to prevent lipodystrophy and ensure consistent absorption of the medication. Each of these practices is crucial for safe and effective insulin management.