PTCB Certified Pharmacy Technician (PTCE)Federal RequirementsMedium

A pharmacy technician is assisting the pharmacist with an inventory of all controlled substances. According to federal regulations, how frequently must a complete inventory of all controlled substances be performed?

  1. ABiennially (every 2 years)
  2. BEvery 6 months
  3. CAnnually
  4. DUpon change of the pharmacist-in-charge
Show answer & explanation

Correct answer: A. Biennially (every 2 years)

Federal regulations require a complete inventory of all controlled substances to be performed at least every two years (biennially). State laws may require more frequent inventories.

Why the other options are wrong

  • B. This is more frequent than the federal minimum; some states may require it.
  • C. This is more frequent than the federal minimum; some states may require it.
  • D. This is a common requirement, but it is in addition to, not in place of, the biennial inventory.

Controlled Substance Inventory Frequency

Federal law (DEA) mandates that pharmacies conduct a complete inventory of all controlled substances at least every two years.

  • Initial inventory required upon opening a pharmacy.
  • Biennial inventory (every 2 years) is the federal minimum.
  • State laws may require more frequent inventories (e.g., annually).
  • Inventory must be accurate and include specific details (date, time, drug name, strength, dosage form, quantity).

Memory trick: Inventory is In Two years, not annually.

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