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Urinalysis and Renal Disorders Flashcards

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  1. According to FMCSA regulations, which of the following is routinely checked during the DOT urinalysis as part of the commercial driver physical examination?

    Answer: Sugar, albumin, and specific gravity

    The DOT urinalysis per 49 CFR 391.43 requires testing for sugar (glucose), albumin (protein), and specific gravity as a basic dipstick screen.

  2. A CMV driver's urinalysis shows 2+ glucose. What is the most appropriate next step for the medical examiner?

    Answer: Investigate further for diabetes mellitus before making a certification decision

    Glycosuria requires further investigation for diabetes mellitus; glucose alone does not automatically disqualify a driver, but its underlying cause must be evaluated.

  3. What is the clinical significance of finding persistent proteinuria (albumin 2+ or greater) on a DOT urinalysis in a commercial driver?

    Answer: It may signal underlying renal disease requiring further evaluation

    Persistent proteinuria may indicate underlying chronic kidney disease or other renal pathology and requires further workup before certification.

  4. Which specific gravity range is considered within normal limits during a DOT physical urinalysis?

    Answer: 1.010–1.030

    A specific gravity of 1.010–1.030 reflects normal urine concentration; values outside this range may indicate renal concentrating defects or over-hydration.

  5. A commercial driver undergoing a DOT physical has a urinalysis positive for blood (hematuria). What should the medical examiner do?

    Answer: Investigate the cause of hematuria before making a certification decision

    Hematuria must be investigated to rule out significant urologic or renal pathology before the examiner can make an appropriate certification decision.

  6. A CMV driver is found to have ketonuria on urinalysis during the DOT physical. In which clinical scenario is this finding most medically significant?

    Answer: Drivers with uncontrolled or undiagnosed Type 1 diabetes

    Ketonuria combined with glycosuria is a hallmark of uncontrolled Type 1 diabetes or diabetic ketoacidosis, both of which raise significant safety concerns for CMV operation.

  7. Which statement best describes the purpose of the urinalysis in the FMCSA commercial driver medical examination?

    Answer: It screens for medical conditions that may affect driving safety

    The DOT urinalysis is a medical screening tool to detect conditions such as diabetes and renal disease that could impair driving safety, not a regulated drug test.