Audiologic tests of function and radiologic tests of structure have historically complemented the neurotological examination of patients suspected for retrocochlear involvement. It has been relatively common, for example, to evaluate patients at risk for VIII nerve tumor by both audiologic tests of function (audiogram, speech testing, acoustic reflexes, ABR) and radiologic (computerized tomography [CT] or magnetic resonance imaging [MRI]) means. However, the necessity of tests of function is being questioned for neurotologic diagnosis by some practitioners. The issue pertains to whether the audiologic tests contribute meaningful information to the neurotologist. Adding complexity to the issue are separate questions of cost to the patient and third-party reimbursement for services, both of which influence the test strategies.