Which of the following is NOT a required test for recertification?

For recertification in a medical context, certain tests are mandated to ensure that individuals meet specific health standards. Vision and hearing tests are critical components of this assessment, as they directly relate to a driver's ability to operate a vehicle safely. Vision impairment can significantly affect a driver's attentiveness and reaction times, while hearing loss can prevent timely responses to auditory cues such as sirens or horns.

Urinalysis, while not universally mandated in all medical certifications, is often included as it can help screen for various health issues that might impair an individual’s capacity to drive safely, such as diabetes or drug use.

On the other hand, a chest X-ray is typically not a standard requirement for recertification purposes. It is more commonly used for specific medical evaluations or when there is a particular concern regarding an individual’s respiratory health or history of contagion, rather than as a routine test for all individuals seeking recertification. Therefore, it is appropriate to identify chest X-ray as the answer that does not belong in the list of required tests for recertification.