5 Answers

Yes. Many test positive to TB and must take the ex-ray to determine if they really are.

good question...

chest xray.

50 yrs ago? do you still have TB? Once you test positve for TB, the Dr. will also take an X ray. After that  they do a sputum test to see which medication you require. If you no longer have TB, than X rays are no longer required. 

From Wikipedia

Tuberculosis is diagnosed by finding Mycobacterium tuberculosis bacteria in a clinical specimen taken from the patient. While other investigations may strongly suggest tuberculosis as the diagnosis, they cannot confirm it.

A complete medical evaluation for tuberculosis (TB) must include a medical history, a physical examination, a chest X-ray and microbiological examination (of sputum or some other appropriate sample). It may also include a tuberculin skin test, other scans and X-rays, surgical biopsy.