Pharmacy Technician Certification Board Practice Exam Practice Question

Correct Answer: C

Rationale: Medications must be stored according to specific temperature guidelines to maintain their efficacy. Shingrix, a shingles vaccine, should be stored in a refrigerator (2°C to 8°C) and not in a freezer, where it can lose its effectiveness.

In contrast, Boostrix (a Tdap vaccine) and Havrix (a hepatitis A vaccine) are both stable when stored in a refrigerator, making Options A and B acceptable. Varivax, the chickenpox vaccine, is also stable when stored in a freezer, which makes Option D appropriate. Therefore, only Shingrix stored in a freezer is at risk of being ineffective and should be removed from inventory.