- A pharmacy's controlled substance inventory was accurate at the time of formal biennial inventory. Two weeks later, a DEA inspection reveals a discrepancy of 30 Schedule II opioid tablets between the current count and what dispensing records since the inventory would indicate should be present. Which of the following best analyzes the pharmacy's obligations?
Answer: The post-inventory discrepancy requires immediate investigation including review of all dispensing records, verification of recent deliveries, and documentation review; if the investigation cannot account for the discrepancy, DEA Form 106 must be filed.
A 30-tablet discrepancy in Schedule II opioids discovered during a DEA inspection two weeks after a clean inventory is a serious finding requiring immediate investigation. The investigation must review all relevant records to determine whether the discrepancy can be explained by documentation errors or non-diversion causes. If investigation cannot account for the shortage, DEA Form 106 must be filed. A is incorrect because a discrepancy alone does not prove theft; investigation must precede that conclusion. C is incorrect because adjusting records without investigation is falsification, not compliance. D is incorrect because DEA inspection findings require prompt response; waiting for a formal notice is inappropriate.
- A pharmacy compounds a batch of a Schedule II controlled substance preparation. How does this compounding activity affect the pharmacy's controlled substance inventory obligations?
Answer: The pharmacy must inventory both the bulk API and the finished compounded preparation to ensure accurate controlled substance records.
When a controlled substance is compounded, the pharmacy must accurately account for the quantity of controlled substance API used (decreasing the bulk inventory) and the resulting finished preparation (a new inventory item). The total controlled substance quantity must be reconcilable across both forms. A is incorrect because compounded controlled substance preparations are not exempt from DEA inventory requirements. B is incorrect because the bulk API is also subject to inventory. C is incorrect because the compounding activity immediately affects inventory; waiting until dispensing would create an inaccurate intermediate inventory.
- During biennial inventory, a pharmacy discovers it is short 8 tablets of a Schedule II opioid. An investigation reveals dispensing record errors from six months ago that may account for the discrepancy. Which of the following best analyzes whether DEA Form 106 reporting is required?
Answer: DEA Form 106 is required if the investigation does not conclusively explain the shortage as a documentation error.
The obligation to file DEA Form 106 is triggered by theft or significant loss, not merely by a discrepancy discovered during inventory. If investigation explains the discrepancy as a documentation error -- accounting for the tablets without diversion -- reporting is not required. If investigation cannot eliminate the possibility of theft or diversion, Form 106 is required. A is incorrect because every Schedule II shortage does not automatically require DEA Form 106; the nature of the shortage determines reportability. B is incorrect because the trigger is the nature of the loss, not the discovery method. D is incorrect because there is no specific unit-count threshold exempting losses from reporting.
- For how long must DEA controlled substance inventory records be retained at the registered location?
Answer: At least two years from the date of the inventory, consistent with DEA recordkeeping requirements under 21 CFR 1304.04.
DEA regulations at 21 CFR 1304.04 require all controlled substance records including inventory records to be maintained for at least two years. The records must be kept at the registered location and be readily available for DEA inspection. A is incorrect because one year is below the two-year minimum. C is incorrect because while some states may require longer retention, the federal DEA minimum is two years, not five. D is incorrect because completing a subsequent inventory does not relieve the obligation to retain the prior inventory record; both must be retained for two years from their respective dates.
- During a biennial controlled substance inventory, a technician is counting an open bottle of a Schedule IV controlled substance that contains approximately 750 tablets. Which counting method is required?
Answer: An estimated count is sufficient for open containers of Schedule IV substances with fewer than 1,000 tablets.
For Schedules III through V, an estimated count is acceptable when an open container holds 1,000 or fewer dosage units. Since this bottle contains approximately 750 tablets, an estimated count satisfies the DEA requirement. A is incorrect because the biennial formal inventory does not require exact counts for Schedule III through V unless the 1,000-unit threshold in an open container is met. C is incorrect because the Schedule IV designation does not itself impose an exact count requirement; the relevant distinction is Schedule II versus III-V. D is incorrect as an absolute statement because open Schedule III-V containers with more than 1,000 units require exact counting.
- During the biennial inventory, a pharmacist encounters a sealed bottle of a Schedule II opioid that has never been opened. Which of the following best describes how this item must be counted?
Answer: The manufacturer's labeled count may be used for sealed Schedule II containers to meet the exact count requirement.
Schedule II requires an exact count. For sealed containers that have not been tampered with, the pharmacist may rely on the manufacturer's labeled count as the basis for the exact count without opening the container. B is incorrect because estimated counts are not permitted for Schedule II. C is incorrect because sealed containers are not exempt from inventory; they must be included and counted. D is incorrect because physically opening a sealed, untampered container is not required; the manufacturer's labeled count satisfies the exact count requirement.
- A hospital maintains floor stock controlled substances in automated dispensing cabinets (ADCs) on nursing units. How must these controlled substances be included in the hospital pharmacy's controlled substance inventory?
Answer: Controlled substances in ADCs must be included in the hospital pharmacy's biennial inventory under the facility's DEA registration.
The DEA registration covers all controlled substances held at the registered location, including those in ADCs distributed throughout the hospital. All such inventory must be included in the hospital pharmacy's biennial controlled substance inventory. A is incorrect because the physical location within the facility does not exempt substances from inventory requirements. C is incorrect because DEA regulations require biennial inventories; daily inventory is a hospital best practice but not a DEA mandate. D is incorrect because floor stock controlled substances fall under the hospital pharmacy's DEA registration and must be included in its inventory.
- A pharmacy that is permanently closing its DEA registration must take a final controlled substance inventory. Which of the following best describes this requirement?
Answer: A final inventory must be taken on the closing date and retained for DEA inspection.
When a pharmacy permanently closes and surrenders its DEA registration, a final controlled substance inventory must be conducted on the date controlled substance activities cease. The inventory is retained in the pharmacy's records -- DEA regulations do not generally require it to be forwarded to the DEA at the time of closing; it must be available for DEA inspection or request. The DEA Certificate of Registration itself should be returned to the DEA. A is incorrect because the prior biennial inventory does not serve as a closing inventory; a separate final inventory on the date of closure is required. B is incorrect because the final inventory requirement applies regardless of how long the pharmacy has been open. C is incorrect because the final inventory must be taken on the date dispensing ceases, not within 30 days after.
- When must a pharmacy conduct its initial controlled substance inventory under DEA regulations?
Answer: On the date the pharmacy first engages in the manufacture, distribution, or dispensing of controlled substances under the DEA registration.
DEA regulations require the initial inventory be taken on the date the registrant first engages in the manufacture, distribution, or dispensing of controlled substances. This establishes the baseline for all subsequent inventory cycles. A is incorrect because the initial inventory is not tied to a 30-day post-registration window; it must be on the first day of activity. B captures the same concept as C but is not the precise regulatory language; the official requirement is the first day of engaging in the regulated activity under the registration. D is incorrect because the initial inventory is mandatory, not optional, and it begins the biennial cycle.
- A new PIC reviewing pharmacy records discovers the controlled substance inventory has not been conducted in 25 months because the prior PIC left without completing it. Which of the following best analyzes the current PIC's obligations?
Answer: The current PIC must immediately conduct the overdue inventory to correct the DEA violation, regardless of previous PIC's actions.
The current PIC bears legal responsibility for the registered pharmacy's compliance, including conducting the overdue inventory immediately. The 25-month gap is a DEA violation that must be remedied regardless of which individual was responsible. Voluntary disclosure may be appropriate. B is incorrect because the current PIC cannot defer the overdue inventory to the next regular cycle; the gap must be remedied now. C is incorrect because waiting would extend the violation further. D is incorrect because the two-year requirement is measured from the prior inventory date, not from a DEA inspection date.
- A pharmacy is purchased by a new owner who will obtain a new DEA registration. Which of the following best analyzes the new owner's controlled substance inventory obligations?
Answer: The new owner must conduct an initial inventory on the date their DEA registration becomes effective and controlled substance activities begin; the previous owner's records do not carry over as the new registrant's inventory baseline.
Each DEA registrant is a separate legal entity with independent inventory obligations. When a new DEA registrant takes over, an initial inventory is required on the date their registration becomes active. The previous registrant's records are not transferable as the new registrant's inventory baseline. A is incorrect because the prior registrant's biennial inventory is not applicable to the new registrant. C is incorrect because there is no 90-day deferral provision for initial inventories in a pharmacy acquisition. D is incorrect because transfer documentation does not substitute for the new registrant's own initial inventory.
- During a biennial controlled substance inventory, a pharmacist discovers that the count of a Schedule II opioid is 42 tablets lower than dispensing records would indicate. What is the most appropriate initial response?
Answer: Investigate the discrepancy thoroughly and, if theft or significant loss is confirmed, report to the DEA with Form 106.
When a discrepancy is discovered, the appropriate first step is a thorough investigation to determine the cause. Discrepancies can result from documentation errors, miscounts, or actual diversion. Only if the investigation identifies theft or significant loss does DEA Form 106 filing become required. B is incorrect because not every discrepancy constitutes reportable theft or significant loss; investigation must precede that determination. C is incorrect because adjusting records without investigation is inappropriate; the discrepancy must be genuinely investigated. D is incorrect because there is no acceptable margin of error for Schedule II exact counts; any unexplained discrepancy requires investigation.
- A pharmacy's last biennial inventory was conducted on March 1 two years ago. The pharmacist wants to know whether the next inventory must be on exactly March 1 or whether some timing flexibility is permitted. Which of the following best analyzes the timing requirement?
Answer: The inventory must be conducted within two years of the previous inventory date, allowing flexibility but not exceeding the two-year period.
The DEA requires the inventory within two years of the prior inventory but does not require it on the exact anniversary date. The pharmacy may conduct the inventory on any date within the two-year window. Conducting it slightly early is permissible and avoids the risk of inadvertent non-compliance. A is incorrect because DEA regulations require completion within two years; the exact date flexibility is permitted. B is incorrect because conducting the inventory after March 1 (the two-year anniversary) would violate the requirement; only earlier timing is permissible, not later. C is incorrect because the inventory cannot exceed two years from the prior one; there is a maximum timeframe.
- A DEA investigator arrives without advance notice and requests current controlled substance inventory records. The pharmacy's most recent biennial inventory was 18 months ago and the pharmacy has not maintained a perpetual inventory for Schedules III through V since then. Which of the following best analyzes the pharmacy's situation?
Answer: The pharmacy is compliant, but lack of interim records may complicate explaining discrepancies during DEA inspection.
The DEA requires biennial inventories; a current 18-month-old inventory satisfies the federal requirement. There is no federal mandate for perpetual inventory of Schedules III through V. However, without interim tracking, the pharmacy will have difficulty explaining discrepancies found during the inspection. A is incorrect because DEA does not mandate perpetual inventory at the federal level. B is incorrect as an absolute statement because while the biennial requirement is met, interim accountability gaps may raise concerns. C is incorrect because DEA does not require production of a real-time count within 24 hours; the biennial records are what must be available.
- A pharmacy chain operates five retail locations, each with its own DEA registration. The chain wants to conduct inventories at all five locations on the same date. Which of the following best describes whether this is permissible?
Answer: Conducting inventories at all five locations on the same date is permissible, but each location's inventory must be conducted and documented separately because each DEA registration is location-specific.
Each DEA registration is location-specific, and the inventory requirement applies to each registered location separately. Conducting all five inventories on the same date is permissible, but each location's inventory must be a separate document reflecting the controlled substances at that specific registered address. A is incorrect because chain pharmacies do not file a single DEA registration; each location requires its own. B is incorrect because the chain holding all registrations does not make a combined inventory valid; each registration requires its own separate inventory. D is incorrect because DEA regulations do not prohibit same-day inventories at multiple locations.
- A pharmacy has been maintaining a perpetual inventory of all controlled substances, updating the count after each dispensing transaction. Does this perpetual inventory system eliminate the need for a formal DEA biennial inventory?
Answer: No, a perpetual inventory does not replace the DEA-required formal biennial inventory, which must occur every two years.
A perpetual inventory system is a best practice but does not substitute for the formal DEA biennial inventory. The DEA requires a documented formal inventory taken at a specific point in time at least every two years; the biennial inventory and perpetual system serve complementary purposes. A is incorrect because the DEA biennial requirement exists independently of whether a perpetual system is maintained. B is incorrect because an annually audited perpetual system does not satisfy the formal point-in-time biennial inventory requirement. D is incorrect because there is no DEA waiver mechanism to extend the biennial cycle to three years.
- A hospital pharmacy's biennial inventory reveals that one ADC shows 12 extra tablets of oxycodone 10 mg compared to its system record, while a second ADC on another unit is short by exactly 12 tablets of the same product. Which of the following most likely explains this discrepancy and what action is required?
Answer: The discrepancy may be due to misloading; investigate and report to DEA if theft is suspected.
The pattern of one ADC being over by 12 while another is short by the same amount strongly suggests a stock loading error rather than diversion. An investigation should determine the explanation. If resolved as a stock misplacement, DEA reporting is not required. A is incorrect because investigation must precede any conclusion of diversion. C is incorrect because there is no acceptable variance for Schedule II exact counts; unexplained discrepancies require investigation. D is incorrect because simultaneous reporting before investigation is premature.
- Under DEA inventory requirements, how does the counting method differ for Schedule II controlled substances compared to Schedules III through V?
Answer: Schedule II requires exact counts; Schedules III-V require estimated counts unless the container holds over 1,000 units.
DEA regulations at 21 CFR 1304.11(b) require exact counts for Schedule II controlled substances. For Schedules III through V, an estimated count is acceptable unless the container is open and contains more than 1,000 dosage units, in which case an exact count is required for that container. B is incorrect because exact counts are specifically required for Schedule II; estimating CII inventory is a violation. C is incorrect because estimated counts are specifically permitted for Schedules III through V in most situations. D is incorrect because the exact versus estimated distinction is correctly the opposite of what D states.
- A pharmacy wants a staff pharmacist to conduct the biennial controlled substance inventory because the pharmacist-in-charge is on vacation. Which of the following best describes whether a staff pharmacist may conduct the inventory?
Answer: A staff pharmacist who is an authorized employee of the DEA-registered pharmacy may conduct the inventory; DEA regulations permit the inventory to be conducted by the registrant or an authorized employee.
DEA regulations permit the registrant to conduct the inventory through authorized employees. A staff pharmacist employed at the registered location is an authorized employee who may conduct the inventory. B is incorrect because DEA regulations do not limit inventory authority to the PIC; any authorized employee may conduct it. C is incorrect because a DEA power of attorney is used for ordering Schedule I and II substances, not for authorizing inventory conduct. D is incorrect because DEA agents do not conduct pharmacies' routine biennial inventories.
- A pharmacist is conducting biennial inventory and counting an open bottle of a Schedule IV benzodiazepine. The original bottle held 1,200 tablets and some have been dispensed. The pharmacist estimates the current count is under 1,000 without actually counting, and records an estimate. Which of the following best analyzes whether this approach is appropriate?
Answer: The approach is inappropriate; an exact count is required if the bottle potentially contains 1,000 or more tablets to ensure compliance.
The DEA threshold for requiring exact counting of Schedule III-V substances in open containers is more than 1,000 dosage units. If there is uncertainty about whether the count is above or below this threshold, the pharmacist should count exactly to ensure compliance. B is incorrect because if the actual count is above 1,000, documenting an estimate does not satisfy the exact count requirement. C is incorrect because reasoning from original fill and dispensing history is not a reliable method when the count may be near the threshold. D is incorrect because Schedule III-V open containers with more than 1,000 units require an exact count.
