MPJE: Multistate Pharmacy Jurisprudence Examination Quiz: Controlled Inventory
20 questions · exam conditions
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Controlled InventoryQuestion 1 of 20

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?

An exact count is required because the biennial inventory requires all substances to be exactly counted.
An estimated count is sufficient for open containers of Schedule IV substances with fewer than 1,000 tablets.
An exact count is required because Schedule IV substances carry higher abuse potential than Schedule V.
An estimated count is sufficient for all Schedule III through V substances regardless of container size or unit count.
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MPJE: Multistate Pharmacy Jurisprudence Examination Quiz

MPJE: Multistate Pharmacy Jurisprudence Examination Quiz: Controlled Inventory

Practice Controlled Inventory in MPJE: Multistate Pharmacy Jurisprudence Examination with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

What this quiz covers

This quiz focuses on Controlled Inventory, giving you a quick way to practice the rules, question types, and explanations that matter most for MPJE: Multistate Pharmacy Jurisprudence Examination.

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

All questions

Question 1

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?

  1. An exact count is required because the biennial inventory requires all substances to be exactly counted.
  2. An estimated count is sufficient for open containers of Schedule IV substances with fewer than 1,000 tablets. (correct answer)
  3. An exact count is required because Schedule IV substances carry higher abuse potential than Schedule V.
  4. An estimated count is sufficient for all Schedule III through V substances regardless of container size or unit count.
Explanation: 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.

Question 2

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?

  1. 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. (correct answer)
  2. Only the PIC may conduct the biennial inventory; delegation to another pharmacist is prohibited.
  3. A staff pharmacist may conduct the inventory only if the PIC provides a written power of attorney specifically for inventory purposes.
  4. Only a DEA special agent may conduct an official controlled substance inventory.
Explanation: 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.

Question 3

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?

  1. Floor stock controlled substances in ADCs are exempt from the biennial inventory requirement because they are outside the pharmacy dispensing area.
  2. Controlled substances in ADCs must be included in the hospital pharmacy's biennial inventory under the facility's DEA registration. (correct answer)
  3. Floor stock in ADCs must be inventoried daily rather than biennially because of their higher patient exposure risk.
  4. Floor stock in ADCs is inventoried separately by nursing staff and submitted to the DEA independently of the pharmacy's inventory.
Explanation: 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.

Question 4

For how long must DEA controlled substance inventory records be retained at the registered location?

  1. One year from the date the inventory was conducted.
  2. At least two years from the date of the inventory, consistent with DEA recordkeeping requirements under 21 CFR 1304.04. (correct answer)
  3. Five years, because inventory records are the most important class of DEA records.
  4. Inventory records need not be retained after the subsequent biennial inventory has been completed.
Explanation: 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.

Question 5

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?

  1. This is permissible because chain pharmacies may file a single DEA registration covering all locations.
  2. This is permissible because the same chain holds all five registrations and a combined inventory satisfies the requirement.
  3. 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. (correct answer)
  4. This is not permissible because each location must conduct its inventory on a different date to prevent manipulation of counts between locations.
Explanation: 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.

Question 6

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?

  1. The discrepancy indicates diversion and must be reported to the DEA immediately using DEA Form 106.
  2. The discrepancy may be due to misloading; investigate and report to DEA if theft is suspected. (correct answer)
  3. The discrepancy is acceptable because a 12-tablet difference in a hospital setting is within normal variance.
  4. The discrepancy must be reported to the state board of pharmacy and the DEA simultaneously before investigation.
Explanation: 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.

Question 7

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?

  1. The approach is inappropriate; an exact count is required if the bottle potentially contains 1,000 or more tablets to ensure compliance. (correct answer)
  2. The approach is appropriate because the pharmacist reasonably estimated the count to be under 1,000; a documented estimate satisfies DEA requirements.
  3. The approach is appropriate because reasoning from original fill and dispensing history is an accepted method when the count is near the threshold.
  4. The approach is appropriate because all open Schedule IV containers may be estimated regardless of the number of units they contain.
Explanation: 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.

Question 8

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?

  1. The finding proves theft or diversion; DEA Form 106 must be filed immediately.
  2. 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. (correct answer)
  3. The pharmacy need only reconcile the discrepancy on paper; adjusting the dispensing records satisfies DEA requirements.
  4. The pharmacy is not obligated to act because a DEA inspection finding is advisory until the DEA issues a formal violation notice.
Explanation: 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.

Question 9

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?

  1. The inventory must be conducted on exactly March 1 to maintain the two-year cycle; any deviation constitutes a violation.
  2. The inventory must be conducted within 30 days of March 1, either before or after.
  3. The inventory may be conducted at any time; the two-year requirement is a maximum frequency standard with no specific date requirement.
  4. The inventory must be conducted within two years of the previous inventory date, allowing flexibility but not exceeding the two-year period. (correct answer)
Explanation: 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.

Question 10

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?

  1. The pharmacy is non-compliant because federal DEA regulations require maintaining a running inventory for all controlled substances.
  2. The pharmacy is fully compliant because the 18-month-old biennial inventory satisfies all DEA inventory requirements.
  3. The pharmacy is non-compliant because DEA inspections require production of a real-time count within 24 hours of notice.
  4. The pharmacy is compliant, but lack of interim records may complicate explaining discrepancies during DEA inspection. (correct answer)
Explanation: 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.

Question 11

A new community pharmacy opens and receives its DEA Certificate of Registration on the same day its first Schedule II controlled substance delivery arrives. When must the initial controlled substance inventory be conducted?

  1. Within 14 days of receiving the DEA Certificate of Registration.
  2. On the first anniversary of the DEA registration.
  3. At any point during the first 30 days of operation.
  4. On the day the first Schedule II delivery is received. (correct answer)
Explanation: DEA regulations require the initial inventory to be taken on the date the pharmacy first engages in activities under the registration. In this case that is the day the Schedule II delivery is received and controlled substance activities begin, establishing the baseline for the biennial cycle. A is incorrect because the 14-day window is not the DEA standard. B is incorrect because the first anniversary is far too late; the initial inventory is tied to the first day of activity. C is incorrect because a 30-day grace period does not apply; the initial inventory must occur on the actual first day of controlled substance activity.

Question 12

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?

  1. DEA Form 106 must be filed because any shortage of Schedule II substances is automatically a reportable significant loss.
  2. DEA Form 106 is not required because the shortage was discovered during routine inventory rather than a theft report.
  3. DEA Form 106 is required if the investigation does not conclusively explain the shortage as a documentation error. (correct answer)
  4. DEA Form 106 is not required because 8 tablets falls below the DEA's minimum reporting threshold of 10 units.
Explanation: 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.

Question 13

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?

  1. Yes, a perpetual inventory system completely satisfies the biennial inventory requirement.
  2. Yes, if the perpetual inventory is audited annually, it satisfies the two-year requirement.
  3. No, a perpetual inventory does not replace the DEA-required formal biennial inventory, which must occur every two years. (correct answer)
  4. No, but pharmacies maintaining perpetual inventories may request a DEA waiver to extend the biennial cycle to three years.
Explanation: 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.

Question 14

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?

  1. The current PIC must immediately conduct the overdue inventory to correct the DEA violation, regardless of previous PIC's actions. (correct answer)
  2. The current PIC is not responsible for the prior PIC's failure and need only ensure future inventories comply with the two-year requirement.
  3. The current PIC must wait until the two-year anniversary of the prior inventory to conduct the next one to maintain the regular cycle.
  4. A 25-month gap is not a violation because the DEA measures the two-year period from the date of the most recent DEA inspection.
Explanation: 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.

Question 15

A pharmacy's last complete controlled substance inventory was conducted two years and three months ago. No new inventory has been conducted since then. Which of the following best describes the pharmacy's compliance status?

  1. The pharmacy is compliant because the two-year window is measured from the date of DEA registration, not the last inventory.
  2. The pharmacy is compliant because the two-year requirement is a guideline and minor delays do not constitute violations.
  3. The pharmacy is compliant as long as the inventory is conducted before the end of the current calendar year.
  4. The pharmacy is non-compliant because it failed to conduct a biennial inventory within the required two-year timeframe. (correct answer)
Explanation: The biennial inventory must be taken within two years of the prior inventory. At two years and three months since the last inventory, the pharmacy has exceeded the two-year requirement and is in violation of 21 CFR 1304.11. A is incorrect because the two-year cycle is measured from the date of the prior inventory, not the registration date. B is incorrect because the biennial inventory is a mandatory requirement, not a guideline. C is incorrect because there is no end-of-calendar-year grace period; the two-year window runs from the prior inventory date.

Question 16

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?

  1. Investigate the discrepancy thoroughly and, if theft or significant loss is confirmed, report to the DEA with Form 106. (correct answer)
  2. Immediately file a DEA Form 106 because any discrepancy in Schedule II inventory constitutes a reportable theft or significant loss.
  3. Adjust the inventory records to reflect the actual count and document the discrepancy in the compounding log.
  4. No action is required because a 42-tablet discrepancy is within the acceptable margin of error for Schedule II inventory.
Explanation: 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.

Question 17

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?

  1. The new owner may continue using the previous owner's biennial inventory as the starting point; no new inventory is needed until two years after the previous owner's last inventory.
  2. 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. (correct answer)
  3. The new owner may defer the initial inventory for 90 days while the business transitions.
  4. No initial inventory is required if the new owner purchased the entire controlled substance inventory from the previous owner with documented transfer records.
Explanation: 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.

Question 18

A pharmacy's biennial controlled substance inventory record must include which of the following information for each controlled substance?

  1. Only the drug name and total quantity; other details are maintained separately in the dispensing system.
  2. The drug name, DEA schedule, and the prescribers who ordered the substance in the past two years.
  3. Drug name, dosage form, strength, exact or estimated count, and exact count for Schedule II substances. (correct answer)
  4. The drug name and the pharmacist's signature, which constitutes a complete inventory record under DEA regulations.
Explanation: The inventory record must contain sufficient information to identify each controlled substance and document the count methodology: name, dosage form, strength, quantity on hand with notation of exact versus estimated, and for Schedule III-V, indication of whether an open container exceeded 1,000 units requiring exact counting. A is incorrect because drug name and quantity alone are insufficient. B is incorrect because prescriber ordering history is not a required element of the inventory record. D is incorrect because drug name and pharmacist signature alone are far too minimal.

Question 19

When must a pharmacy conduct its initial controlled substance inventory under DEA regulations?

  1. Within 30 days of receiving the DEA Certificate of Registration.
  2. On the first day the pharmacy dispenses a controlled substance.
  3. On the date the pharmacy first engages in the manufacture, distribution, or dispensing of controlled substances under the DEA registration. (correct answer)
  4. The initial inventory is optional; the biennial inventory cycle begins at the pharmacy's first anniversary of registration.
Explanation: 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.

Question 20

Under DEA regulations, how frequently must a pharmacy conduct a complete controlled substance inventory?

  1. Annually, to ensure controlled substance counts are current.
  2. At least once every two years (biennially), with the inventory taken on any one day within the two-year period. (correct answer)
  3. Every six months for Schedule II controlled substances and every two years for Schedules III through V.
  4. Only when required by the state board of pharmacy, which sets its own frequency.
Explanation: DEA regulations at 21 CFR 1304.11 require registrants to conduct a complete controlled substance inventory at least once every two years. A is incorrect because annual inventory is not the federal requirement; the biennial standard applies. C is incorrect because the two-year standard applies to all schedules; the Schedule II versus III-V distinction relates to exact versus estimated counting, not frequency. D is incorrect because federal DEA regulations establish the minimum frequency; states may add more stringent requirements but the federal two-year standard applies regardless.