It is important for the patient to understand that tests are not done at random. Not every patient's problem will require an X-Ray, CT Scan, EMG, or lab tests. Some disorders can be defined by clinical findings. Most disorders, simple or complex, have distinguishing characteristics. When testing is ordered, it is done to confirm the diagnosis.
Diagnostic tests are of great value.
When the test results are combined with the findings from the first two steps, it is a win-win situation for both the physician and the patient. The physician is able to formulate an accurate diagnosis and offer the patient the best treatment options.