#13131: Adenosine Deaminase
(ADA TB Tuberculosis (TB))

COMPONENTS
Name Method Reference Range Units
Adenosine Deaminase S U/L 

SPECIMEN REQUIREMENTS
No Type Volume Temperature Container Type Instructions
1 Serum 1 (0.5) mL Frozen - 30 Day(s)/Ambient - 72 Hour(s)/Refrigerated - 30 Day(s) Aliquot  
2 Fluid Pleural 1 (0.5) mL Ambient - 72 Hour(s)/Frozen - 30 Day(s)/Refrigerated - 30 Day(s) Sterile  
3 CSF 1 (0.5) mL Frozen - 30 Day(s)/Ambient - 72 Hour(s)/Refrigerated - 30 Day(s) Sterile  

GENERAL INFORMATION
Setup Schedule Wednesday, Friday
Reported 2 days
CPT Code 84311
Notes Optimal results require testing within 1 month of collection. Prices might not include a handling fee.
Clinical Utilities Adenosine deaminase (ADA) is an endogenous tissue enzyme which is released into the serum in patients with many different types of malignancies and infections, including viral hepatitis, infectious mononucleosis, typhoid fever, and tuberculosis. It is the most useful single test in portal hypertension (ascites) associated with liver cirrhosis. In pleural fluid, elevated ADA levels are very commonly associated with tuberculosis, although increased ADA activity may be found in effusions due to a number of causes, including TB, bacterial infections, rheumatologic disease, and lymphoproliferative disorders. In CSF, ADA is elevated in cases of tuberculous meningitis.

COLLECTION INSTRUCTIONS
Other acceptable specimens are: CSF and Pleural fluid.

Collect in a screw-cap leak-proof tube.