Thanks for your query.
is a test done as a routine investigation for tuberculosis
If the test is positive it may be possible that the person may have tuberculosis but it is not the only test from which a person can be labelled as having tuberculosis.
I would suggest you to first see if you have any symptoms like:-loss of appetite,low grade fever
or evening rise in temperature,severe cough or chest infection
,pain in abdomen,unexplained weight loss
,infertility in females etc.
The above listed symptoms are seen in person with tuberculosis so if you have any of these you should get the scan done.
See if you have any of these symptoms,consult a doctor and then get investigated.
Hope this answer is helpful to you.