Certification of Pharmacy Technicians (ExCPT) Practice Exam

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How is the drug administered if the directions state 2 gtt a.u. q12h?

Both ears
Right eye
By mouth
Topically

The correct answer is: Both ears

When the directions specify "2 gtt a.u. q12h," this indicates the administration of two drops in both ears (a.u. stands for "auris utraque," which means both ears). The notation "q12h" means that this administration should occur every 12 hours. This information is essential for understanding how the medication should be applied and is especially relevant in treating conditions affecting both ears simultaneously, such as infections or inflammation. The other options refer to different routes of administration: the right eye (which would be noted as "od"), orally (noted simply as "po"), and topically (which would not explicitly describe the ear or eye uses). Hence, "2 gtt a.u." specifically clarifies that the medication is intended for ear use.