The ADA Test or Adenosine Deaminase test is done to measure the level of ADA or

Adenosine Deaminase in one's pleural fluid. The usual objective of the test is in the

diagnosis of the disease Mycobacterium tuberculosis, commonly known as tuberculosis or

TB.The main symptoms of ADA deficiency are pneumonia, chronic diarrhea, and

widespread skin rashes. Affected children also grow much more slowly than healthy

children and some have developmental delay. Most individuals with ADA deficiency are

diagnosed with SCID in the first 6 months of life.