About this test
Proper storage keeps medications safe and effective, and the PTCE tests it directly under the Medications domain. Questions cover the temperature ranges a technician must know cold, which products need protection from light, how long a reconstituted product is good for, and how to identify and pull expired stock.
The facts here are concrete and learnable: refrigeration is 2 to 8 degrees Celsius, room temperature is roughly 20 to 25 degrees Celsius, and freezer ranges apply to specific products. Every answer is cited so you can confirm the exact range and the reasoning.
New to the material? Work through our 2026 PTCB study guide first, then reinforce it with the PTCB medications domain guide.
What's in the question bank
| Topic | Questions in bank |
|---|---|
| Storage | 10 |
| Expiration | 7 |
Sample questions with answers
These 8 questions come straight from the 17-question bank the timed test above draws from. Work each one before you open the answer: recalling it cold is what moves it into long-term memory.
1. A caregiver asks how to get rid of a used fentanyl transdermal patch at home. Per FDA recommendations, what should they do?
- A.Throw the used patch directly into the kitchen trash
- B.Cut the patch into small pieces before discarding
- C.Save used patches and return them only at an annual take-back event
- D.Fold the patch in half with the sticky sides together and flush it down the toilet
Show answer and explanation
Correct answer: D. Fold the patch in half with the sticky sides together and flush it down the toilet
The FDA recommends promptly folding used fentanyl patches in half with the sticky sides together and flushing them down the toilet, because a discarded patch still holds enough drug to kill a child who finds and handles it. Ordinary trash disposal is wrong here since children and pets can retrieve the patch.
2. A pharmacist compounds an oral suspension that contains an added preservative. Under USP <795>, what is the longest beyond-use date that may be assigned?
- A.14 days
- B.90 days
- C.180 days
- D.35 days
Show answer and explanation
Correct answer: D. 35 days
Preserved aqueous preparations may be assigned a BUD of up to 35 days under USP <795>. The 90-day and 180-day limits apply to nonaqueous and solid dosage forms respectively, not to a water-based suspension, and 14 days is the stricter limit reserved for nonpreserved aqueous preparations.
3. A pregnant pharmacy technician is asked to clean up several finasteride tablets that were crushed in the counting machine. What is the correct course of action?
- A.Wear a single glove and sweep the powder quickly
- B.She should not handle the crushed tablets at all; another staff member should clean up
- C.Rinse the tablets under water first to deactivate the drug
- D.Handling is fine because oral absorption is the only exposure route
Show answer and explanation
Correct answer: B. She should not handle the crushed tablets at all; another staff member should clean up
Women who are pregnant or may become pregnant should not touch crushed or broken finasteride tablets because the active ingredient can be absorbed through the skin and can cause genital abnormalities in a male fetus. The intact tablet coating normally prevents contact with the drug, but that protection is lost once tablets are crushed, so the skin-exposure risk is real.
4. A conventionally manufactured multiple-dose vial is first punctured on March 1. The manufacturer's labeling gives no in-use time limit. Per USP standards, when must the vial be discarded?
- A.On the manufacturer's printed expiration date
- B.14 days after the first puncture
- C.28 days after the first puncture (March 29)
- D.48 hours after the first puncture
Show answer and explanation
Correct answer: C. 28 days after the first puncture (March 29)
USP <797> states a conventionally manufactured multiple-dose vial may not be used more than 28 days after first puncture unless the manufacturer specifies otherwise. Relying on the printed expiration date is wrong because that date only applies while the vial remains unpunctured.
5. A wholesale order of latanoprost ophthalmic solution arrives at the pharmacy. Where should the unopened bottles be stored?
- A.In the refrigerator at 2°C to 8°C (36°F to 46°F), protected from light
- B.At room temperature on the ophthalmic shelf
- C.In the freezer until dispensed
- D.In a warm cabinet near the compounding area
Show answer and explanation
Correct answer: A. In the refrigerator at 2°C to 8°C (36°F to 46°F), protected from light
Unopened latanoprost bottles are stored under refrigeration at 2°C to 8°C and protected from light. Room-temperature storage only becomes acceptable after a bottle is opened for use, at which point it may be kept at up to 25°C for 6 weeks.
6. According to the FDA, what does the expiration date printed on a manufactured drug product actually represent?
- A.The date after which the drug becomes immediately toxic
- B.The period during which the drug is known to remain stable, retaining its strength, quality, and purity under labeled storage conditions
- C.The last date the pharmacy may legally purchase the product
- D.A marketing date chosen by the wholesaler
Show answer and explanation
Correct answer: B. The period during which the drug is known to remain stable, retaining its strength, quality, and purity under labeled storage conditions
Expiration dates reflect the time period during which the product is known to remain stable when stored as labeled, supported by stability testing submitted to the FDA. Drugs do not automatically become poisonous at expiration; the concern is loss of strength and possible degradation products, so the toxicity option overstates it.
7. Where should unopened insulin vials be stored in the pharmacy to maintain potency until their expiration date?
- A.In the freezer at 0°F or below
- B.In a refrigerator at approximately 36°F to 46°F
- C.At controlled room temperature of 68°F to 77°F
- D.Anywhere the temperature stays below 90°F
Show answer and explanation
Correct answer: B. In a refrigerator at approximately 36°F to 46°F
Manufacturers recommend storing insulin refrigerated at approximately 36°F to 46°F (2°C to 8°C); stored this way unopened products keep their potency until the labeled expiration date. Freezing is wrong because it destroys insulin, and room-temperature storage limits the product to about 28 days of use.
8. A parent picks up a reconstituted amoxicillin oral suspension and asks how long it can be used. What should they be told?
- A.Discard any unused portion after 7 days
- B.It is good until the expiration date on the stock bottle
- C.Discard any unused portion after 28 days
- D.Discard any unused portion after 14 days
Show answer and explanation
Correct answer: D. Discard any unused portion after 14 days
Once mixed with water, amoxicillin suspension should be discarded after 14 days. The stock bottle's expiration date no longer applies after reconstitution because the added water starts chemical degradation, which is why that distractor is wrong.
Ready for the full timed run? Scroll back up and start the Storage & Stability Quiz, or browse every free PTCB quiz by exam domain.
Key concepts to know
The ranges you must own
Refrigerated storage is 2 to 8 degrees Celsius (most vaccines, many insulins before first use, some antibiotics after reconstitution). Controlled room temperature is about 20 to 25 degrees Celsius. Know which insulins are stable at room temperature once in use, because that changes the beyond-use date you counsel.
Beyond-use versus expiration
An expiration date is the manufacturer's date for the unopened product. A beyond-use date is assigned after you open, reconstitute, or compound it, and it is usually much shorter. The exam tests whether you know the difference and can apply a reconstitution beyond-use date.
Storage & Stability Quiz: FAQ
What temperature is refrigerated storage for medications?
Refrigerated storage is 2 to 8 degrees Celsius (about 36 to 46 degrees Fahrenheit). It applies to most vaccines, many insulins before first use, and certain reconstituted antibiotics.
What is the difference between an expiration date and a beyond-use date?
An expiration date is set by the manufacturer for the sealed product. A beyond-use date is assigned once the product is opened, reconstituted, or compounded, and it is typically much shorter than the expiration date.
Official sources checked
This quiz's content and explanations are built from and cross-checked against primary sources. Verify current exam facts directly with PTCB.