CPC Drug Testing Protocols & Compliance Standards 2 — Questions and Answers
Question 1: Under DOT 49 CFR Part 40, what is the minimum volume of urine required for a primary specimen?
- 30 mL (Correct answer)
- 45 mL
- 15 mL
- 60 mL
Correct answer: 30 mL
DOT regulations require at least 30 mL of urine for the primary specimen in a federal workplace drug test.
Question 2: A collector notices the urine temperature is 96°F. What should the collector do?
- Accept the specimen as valid (Correct answer)
- Discard the specimen immediately
- Report the temperature as out-of-range and direct an observed collection
- Request a retest in 30 minutes
Correct answer: Accept the specimen as valid
A temperature between 90°F and 100°F (32–38°C) is within the acceptable range and the specimen should be accepted.
Question 3: What federal agency sets workplace drug testing standards for transportation employees?
- DEA
- SAMHSA
- DOT (Correct answer)
- OSHA
Correct answer: DOT
The Department of Transportation (DOT) sets the drug and alcohol testing standards for safety-sensitive transportation employees.
Question 4: When a donor provides a specimen with a creatinine below 2 mg/dL, how is it reported?
- Dilute
- Substituted (Correct answer)
- Invalid
- Negative
Correct answer: Substituted
Creatinine below 2 mg/dL (combined with specific gravity criteria) meets the criteria for a substituted result.
Question 5: Which of the following adulterants would most likely cause an oxidizing result on a specimen validity test?
- Bleach (Correct answer)
- Vinegar
- Salt water
- Lemon juice
Correct answer: Bleach
Bleach is a strong oxidizing agent that can destroy drug metabolites and is detectable via oxidant colorimetric testing.
Question 6: The MRO must report a verified positive result to the employer within how many days of receiving the lab report?
- 2 business days
- 5 business days (Correct answer)
- 10 business days
- 30 calendar days
Correct answer: 5 business days
Under DOT rules, the MRO must report verified results to the DER within 5 business days.
Question 7: Which chain-of-custody form is used for federal workplace drug testing?
- OMB Form 0930-0158
- Federal CCF (OMB No. 0930-0158) (Correct answer)
- DEA Form 222
- DOT Form 49-B
Correct answer: Federal CCF (OMB No. 0930-0158)
The Federal Custody and Control Form (CCF), OMB No. 0930-0158, is the required form for all DOT-mandated drug tests.
CPC Drug Testing Protocols & Compliance Standards 2
Under DOT 49 CFR Part 40, what is the minimum volume of urine required for a primary specimen?