TB Culture test aims to find if you have tuberculosis (TB), a highly contagious bacterial infection spread through the air. The test can be done on a sample of sputum, the mucus you cough up from your lungs, or it can be done on urine, cerebrospinal fluid (CSF), blood, or tissue. This test is also done to monitor TB treatment. TB test is performed on a sample of lymph node biopsy tissue to measure the level of TB Culture (Lymph node) in the lymph node biopsy tissue. It is performed to confirm Tuberculosis of Lymph Node and during the treatment and after the treatment of Tuberculosis of Lymph Node.