Pharmacy Technician Certification Practice Questions Set 2 - Answer Key

1. A: In certain instances, insulins may be mixed in the same syringe. Regular insulin may be mixed with NPH. Regular insulin should always be drawn up first if mixing with NPH in order to avoid the inadvertent contamination of regular insulin with NPH insulin.

2. C: Once removed, fentanyl patches should be folded together so that the sticky side sticks to itself and then flushed down the toilet in order to avoid potential danger to babies, children, or pets that might be able to access them from the trash. Unless otherwise specified (like fentanyl patches), unused prescription drugs should be removed from the bottle and mixed with an undesirable substance, such as cat litter or coffee grounds, sealed into a disposable container, and then placed in the trash.

3. A: Patients receiving rifampin should be counseled about the possibility of red-orange discoloration of urine and other body fluids, such as sweat and tears. Use may cause permanent discoloration of contact lenses. Rifampin has many drug interactions-it can increase the metabolism of many drugs, rendering them less effective. For example, rifampin can increase the metabolism of estrogens, making birth control pills less effective. It is very important that women of childbearing age who receive rifampin be counseled of this risk and the necessity of a second form of birth control.

4. D: The maximum daily dose of acetaminophen is 4,000 mg, which is 12 tablets of oxycodone/acetaminophen 5/325 (4,000mg % 325mg = 12 tablets). Patients should be counseled about the dangers of liver toxicity associated with acetaminophen use and the importance of taking the lowest effective dose. Patients should also avoid taking other agents concomitantly that may contain acetaminophen (e.g., over-the-counter medications). The Food and Drug Administration (FDA) recommended in 2009 that the maximum daily dose of acetaminophen be less than 4,000 mg due to the dangers associated with liver toxicity.

5. D: Pharmacies are notified of medication recalls by manufacturers and wholesalers by direct mail or fax. Pharmacies can also obtain recall information from the FDA website.

6. B: Digits 6 through 9 are the product code, while the first 5 digits are the manufacturer code, and the last 2 digits are the packaging code.

7. A: A Drug Enforcement Agency (DEA) number, required for each physician writing prescriptions for controlled substances, consists of two letters followed by 7 numbers. The first letter is a classification; for practitioners this letter is most commonly B or F, but may also be A or M. The second letter is the first letter of the physician's last name. To verify that the number is valid, add digits 1, 3, and 5 together. Then add digits 2, 4, and 6 together and multiply that sum by 2. Add those 2 quantities together. The result will be a two digit number, the final digit of which is called the checksum. The checksum will be the seventh number in the DEA code. In equation form, where F and S are the first and second digits in a two digit number, respectively, FS = (1st + 3rd + 5th) + 2(2nd + 4th + 6th); (2+4+3) + 2(1+6+3) = 29; 9 is final number of the DEA code.

8. C: The use of investigational drugs has many requirements in order to protect the patient. Physicians must have the approval of the institutional investigational review board (IRB) prior to drug use. Physicians must communicate risks/benefits of the investigational drug to patients and obtain signed consent. A copy of this consent must be provided to the pharmacy. The pharmacy is responsible for administrative duties, including dispensing and storage.

9. B: Two tsp is approximately 10 mL. 10 mL x 3 times daily x 7 days = 210 mL.

10. B: Because only 500 mL is required, 10 mEq of K-Phos is needed for preparation. 10 mEq % 4.4 mEq/mL = 2.3 mL.

Last Updated: 05/12/2014