Body-Fluid Adenosine Deaminase (ADA) Quantification Test

The Body-Fluid Adenosine Deaminase (ADA) Quantification Test measures the activity level of the enzyme adenosine deaminase in various body fluids (such as pleural, peritoneal, or synovial fluid). Elevated ADA activity in these fluids can be an indicator of infectious or inflammatory conditions—for example, tuberculous pleuritis, peritoneal tuberculosis, or certain inflammatory joint diseases. This test aids clinicians in differentiating between tubercular and non-tubercular effusions, guiding early diagnosis and appropriate therapeutic decisions. Proper specimen collection (ensuring a sterile, unhemolyzed sample), timely transport, and adherence to laboratory instructions ensure reliable results and meaningful clinical interpretation.