Free U.S. Drug Enforcement Administration (DEA) Diversion Investigator Exam Questions and Answers
U.S. Drug Enforcement Administration (DEA) Diversion Investigator Exam is one of the US Federal tests covered here. There is no government-wide federal entrance exam: each agency runs its own screen, from OPM's USA Hire battery to Customs and Border Protection's own entrance examinations.
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Last updated: October 30, 2026
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Question #1
A pharmacy began the week with 1,248 tablets of a medication in stock. On Monday the pharmacy dispensed 396 tablets, and on Tuesday it dispensed 275 tablets. No tablets were received. How many tablets should remain at the end of Tuesday?
Correct answer: B
Explanation
Subtract both amounts dispensed from the starting stock: 1,248 - 396 = 852, and 852 - 275 = 577. The 671 option adds the two amounts dispensed instead of subtracting them, and 852 and 973 each subtract only one day's amount.
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Question #2
How many tablets will it take to fill the following prescription as it is written: "Oxycodone 5 milligrams, 2 tablets by mouth every 6 hours for 7 days"?
Correct answer: C
Explanation
Every 6 hours means 4 doses per day. Two tablets per dose gives 8 tablets per day, and 8 x 7 days = 56 tablets. The 28 option uses only one tablet per dose, and 84 treats the schedule as 6 doses per day.
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Question #3
A prescription for alprazolam 0.5 milligram tablets reads: "Take 1.5 milligrams by mouth daily. Dispense a 30-day supply." How many tablets must the pharmacy dispense?
Correct answer: D
Explanation
The daily dose of 1.5 milligrams divided by 0.5 milligram per tablet is 3 tablets per day. Over 30 days that is 3 x 30 = 90 tablets. The 45 option multiplies the daily milligrams by 30 without converting to tablets, and 30 assumes one tablet a day.
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Question #4
Four pharmacies purchased the following numbers of dosage units of a controlled substance last quarter: 4,200; 5,650; 3,950; and 4,800. What was the average number of dosage units purchased per pharmacy?
Correct answer: C
Explanation
Add the four totals: 4,200 + 5,650 + 3,950 + 4,800 = 18,600. Divide by 4 pharmacies to get 4,650. Dividing the first three totals only would give 4,600, which leaves out one pharmacy.
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Question #5
Three pharmacies dispensed a total of 1,650 prescriptions last month. Pharmacy A dispensed twice as many as Pharmacy B. Pharmacy B dispensed 150 more than Pharmacy C. How many prescriptions did Pharmacy A dispense?
Correct answer: D
Explanation
Let C = x, so B = x + 150 and A = 2(x + 150) = 2x + 300. The total is x + (x + 150) + (2x + 300) = 4x + 450 = 1,650, so x = 300. Then B = 450 and A = 900. The values 300 and 450 are the counts for Pharmacies C and B.
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Question #6
Read the following scenario. On Tuesday, March 11, at 9:40 a.m., Investigator Dana Whitfield and Investigator Luis Ortega arrived at Harbor Street Pharmacy in Tulsa, Oklahoma, to conduct a scheduled inspection. The pharmacist-in-charge, Marcus Bell, provided a perpetual inventory log for hydrocodone/acetaminophen 10 milligram/325 milligram tablets. The log listed 1,840 tablets on hand. A physical count by Ortega found 1,765 tablets. Bell said a technician, Priya Nair, had been out sick since March 3 and that he had not reviewed the log during her absence. Whitfield requested copies of dispensing records from February 1 through March 10. Bell gave her copies of 212 prescriptions but said the records for February 1 through February 7 were kept at the corporate office in Dallas. Whitfield recorded the discrepancy and told Bell that a follow-up visit would be scheduled. Which of the following summaries is accurate and supported by the scenario?
Correct answer: B
Explanation
The log listed 1,840 tablets and the count found 1,765, a shortage of 75 tablets, and the February 1 through 7 records were at the Dallas corporate office. The other summaries change the size or direction of the discrepancy, move the records, or add an admission of altered entries that the scenario never states.
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Question #7
Refer to the scenario. How many prescriptions did Marcus Bell provide copies of to Investigator Whitfield?
Correct answer: D
Explanation
The scenario states that Bell gave Whitfield copies of 212 prescriptions, covering the period other than February 1 through 7. The other numbers are near-matches with transposed or altered digits.
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Question #8
A pharmacy had 1,250 tablets of a controlled substance in stock. During one week it dispensed 387 tablets on Monday, 462 tablets on Wednesday and 215 tablets on Friday. How many tablets should remain in stock at the end of the week, assuming no tablets were received?
Correct answer: B
Explanation
Total dispensed is 387 + 462 + 215 = 1,064 tablets. Subtracting from the starting stock gives 1,250 - 1,064 = 186 tablets. The value 1,064 is only the amount dispensed, and 2,314 results from adding it to the stock.
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Question #9
A prescription reads: "Methadone oral concentrate 10 milligrams per milliliter. Take 35 milligrams by mouth three times daily for 14 days." How many milliliters of the concentrate are needed to fill the prescription as it is written?
Correct answer: D
Explanation
Each dose is 35 mg / 10 mg per mL = 3.5 mL. Three doses a day is 10.5 mL, and over 14 days that is 10.5 x 14 = 147 mL. The value 490 is the milligrams in one dose multiplied by 14 days with no conversion.
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Question #10
A pharmacy purchased 4,800 dosage units of a controlled substance in the first quarter. In each later quarter, its purchases were 25% higher than in the quarter before. How many dosage units did it purchase in the fourth quarter?
Correct answer: E
Explanation
Each quarter multiplies the previous one by 1.25, so the fourth quarter is 4,800 x 1.25 x 1.25 x 1.25 = 9,375. Adding 25% of the original amount three times gives 8,400, which treats the increase as simple instead of compounding.
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FAQ
- Q1: What is the U.S. Drug Enforcement Administration (DEA) Diversion Investigator Exam exam?
- A: U.S. Drug Enforcement Administration (DEA) Diversion Investigator Exam is a US Federal certification exam. Judging by the questions in our bank, it concentrates on diversion, pharmacy, investigator, controlled and prescription.
- Q2: What topics does the U.S. Drug Enforcement Administration (DEA) Diversion Investigator Exam exam cover?
- A: Questions in our U.S. Drug Enforcement Administration (DEA) Diversion Investigator Exam bank cluster around diversion, pharmacy, investigator, controlled, prescription, substances, pharmacist and substance. Working through the full set is the quickest way to find which of these you are weakest on.
- Q3: How should I prepare for U.S. Drug Enforcement Administration (DEA) Diversion Investigator Exam?
- A: Work through the U.S. Drug Enforcement Administration (DEA) Diversion Investigator Exam practice questions here, checking your answer on each one, then sit the practice test to rehearse the exam under timed conditions before the real thing.
- Q4: Are these real U.S. Drug Enforcement Administration (DEA) Diversion Investigator Exam exam questions?
- A: They are drawn from officially released past questions and from community members who have sat U.S. Drug Enforcement Administration (DEA) Diversion Investigator Exam. Answers are verified and updated weekly.
- Q5: Where do I register for the U.S. Drug Enforcement Administration (DEA) Diversion Investigator Exam exam?
- A: Register through US Federal directly. Exampractice is not affiliated with US Federal and does not administer the exam.
- Q6: Is there a free U.S. Drug Enforcement Administration (DEA) Diversion Investigator Exam sample?
- A: Yes. Every U.S. Drug Enforcement Administration (DEA) Diversion Investigator Exam page shows a free sample of real questions. Upgrading opens the full bank and the practice test.