Which test must be documented during a urinalysis for a commercial driver?

In the context of a urinalysis for a commercial driver, documenting the presence of protein is crucial as it can indicate underlying health issues, particularly related to kidney function. Protein in urine, known as proteinuria, may be a sign of glomerular damage or kidney disease, which can impact a driver's ability to operate a commercial vehicle safely.

Regulatory standards for commercial drivers require thorough health assessments to ensure that any conditions affecting their driving capabilities are identified and managed. Therefore, the inclusion of protein testing in the urinalysis helps in monitoring the overall health of the driver, contributing to road safety.

While bilirubin, leukocyte esterase, and nitrites can also provide valuable information regarding various health concerns, they do not specifically align with the most critical elements outlined for commercial driver evaluations. The presence of protein in a driver's urinalysis carries significant implications for assessing their fitness to drive, making it a key focus of the testing process.