Which of the following is NOT included in routine diagnostic testing for commercial drivers?

In the context of the routine diagnostic testing required for commercial drivers, an electrocardiogram (ECG) is not included as a mandatory part of the evaluation process. Routine testing typically focuses on basic health parameters directly affecting a driver's ability to operate a vehicle safely, such as vision and hearing, as these directly correlate with driving capabilities.

Vision testing ensures that drivers meet the minimum visual acuity standards necessary to perceive their environment adequately while driving. Hearing tests assess the driver's ability to hear and respond to important auditory signals on the road, such as horns or sirens, which are crucial for safety.

Urinalysis is also a standard component of the examination process to check for the presence of substances that could impair driving abilities or indicate underlying medical conditions.

In contrast, while an ECG may be beneficial for assessing cardiac health, it is not routinely required for commercial driver examinations. ECGs are typically only ordered when there are specific concerns regarding a patient's heart health or when there is a known history of cardiovascular issues, rather than as a standard part of routine testing for all drivers.