NRCME Endocrine and Metabolic Conditions 5 — Questions and Answers
Question 1: A driver holds a Federal Diabetes Exemption and reports one episode of nocturnal hypoglycemia in the past year that required assistance. What must the NRCME examiner do?
- Certify normally; one episode per year is within exemption limits
- Report the episode and defer renewal of the exemption pending FMCSA review (Correct answer)
- Disqualify the driver permanently
- Issue a restricted certificate allowing daytime driving only
Correct answer: Report the episode and defer renewal of the exemption pending FMCSA review
Any severe hypoglycemic episode requiring third-party assistance must be reported to FMCSA and may jeopardize exemption renewal.
Question 2: Which finding on a DOT physical would MOST likely prompt the NRCME examiner to screen for undiagnosed diabetes in an otherwise asymptomatic driver?
- Heart rate of 88 bpm
- Urinalysis showing glucosuria (Correct answer)
- Mild peripheral edema
- BMI of 27
Correct answer: Urinalysis showing glucosuria
Glucosuria on urinalysis is a classic indicator of hyperglycemia and should prompt further evaluation for diabetes.
Question 3: A driver with well-controlled Graves' disease (hyperthyroidism) treated with methimazole has a resting heart rate of 102 bpm and mild tremor. What should the NRCME examiner do?
- Certify for 2 years; Graves' disease is not disqualifying if treated
- Certify for 1 year with cardiology clearance
- Disqualify until thyroid function is normalized and symptoms resolve (Correct answer)
- Require a stress test before certifying
Correct answer: Disqualify until thyroid function is normalized and symptoms resolve
Active hyperthyroid symptoms including tachycardia and tremor indicate inadequate control, which poses a safety risk and warrants disqualification until stabilized.
Question 4: Under FMCSA guidelines, a driver using an oral hypoglycemic agent (e.g., metformin) with no insulin use and an A1c of 6.8% should be:
- Enrolled in the Federal Diabetes Exemption Program
- Disqualified for 6 months then re-evaluated
- Certified under standard medical criteria if no hypoglycemia risk or other disqualifying conditions (Correct answer)
- Restricted to intrastate driving only
Correct answer: Certified under standard medical criteria if no hypoglycemia risk or other disqualifying conditions
Oral hypoglycemic agents not causing hypoglycemia do not trigger the insulin exemption requirement, and well-controlled diabetes on such therapy is certifiable.
Question 5: A driver with primary adrenal insufficiency (Addison's disease) on stable hydrocortisone and fludrocortisone replacement presents with normal electrolytes and no symptoms. Which concern is MOST important for the NRCME examiner?
- Chronic steroid use causing bone loss
- Risk of adrenal crisis during sudden stress or illness while operating a CMV (Correct answer)
- Increased infection risk from immunosuppression
- Mandatory disqualification for all adrenal disorders
Correct answer: Risk of adrenal crisis during sudden stress or illness while operating a CMV
Adrenal crisis—potentially causing sudden incapacitation—is the primary safety concern for CMV drivers with adrenal insufficiency.
Question 6: A driver with chronic kidney disease stage 3 secondary to diabetic nephropathy has an eGFR of 42 mL/min/1.73m². He is not on dialysis and reports no fatigue or cognitive symptoms. What is the most appropriate NRCME certification decision?
- Permanent disqualification for CKD stage 3
- Certify if diabetes and blood pressure are adequately controlled and no uremic symptoms are present (Correct answer)
- Certify only after nephrology clears the driver for strenuous activity
- Issue a 3-month certificate pending kidney biopsy
Correct answer: Certify if diabetes and blood pressure are adequately controlled and no uremic symptoms are present
CKD stage 3 without uremic symptoms or functional impairment does not automatically disqualify a driver; assessment focuses on control of underlying conditions.
Question 7: A CMV driver reports taking semaglutide (GLP-1 agonist) for type 2 diabetes. He does not use insulin. He reports no hypoglycemic episodes. Which statement regarding certification is correct?
- GLP-1 agonists require enrollment in the Federal Diabetes Exemption Program
- Semaglutide is disqualifying due to risk of nausea impairing alertness
- Driver may be certified under standard criteria if diabetes is controlled and no other disqualifying conditions exist (Correct answer)
- Driver must provide a 6-month log of blood glucose before certification
Correct answer: Driver may be certified under standard criteria if diabetes is controlled and no other disqualifying conditions exist
GLP-1 agonists are not insulin and do not carry significant hypoglycemia risk when used without insulin; standard certification criteria apply.
NRCME Endocrine and Metabolic Conditions 5
A driver holds a Federal Diabetes Exemption and reports one episode of nocturnal hypoglycemia in the past year that required assistance.
What must the NRCME examiner do?