Which of the following is not required to accept a consult or testing?

The answer indicates that the medical examiner performing the test is not required to accept a consult or testing. In the context of FMCSA regulations, the medical examiner's role is to evaluate the driver's medical history and physical condition to determine fitness for duty. While input from various parties, including medical review board personnel, the driver’s employer, and a licensed healthcare provider, may be beneficial or necessary in some situations, the decision to proceed with a consultation or testing ultimately rests with the medical examiner.

The medical examiner applies their training and expertise to assess the driver's health and safety on the road. Therefore, while these other parties may provide valuable information or recommendations, the medical examiner’s evaluation is the primary requirement for making such decisions regarding the driver's fitness for duty.