Adenosine Deaminase (ADA)

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Product Features

The assay is linear from 0-200 U/L and has precisions of Intra assay %CV < 4.5% and Inter assay %CV < 5.0%. The assay is ready-to-use for both manual method  and automated chemistry analyzers (Kinetic). The assay is specific for ADA and has no detectable reaction with other nucleosides and is not affected by serum  bilirubin up to 30 mg/dL, hemoglobin up to 200 mg/dL, triglycerides up to 750 mg/dL, or ascorbic acid up to 4 mg/dL. The assay is based on H2O2 detection, which  is more sensitive and reliable than the method detecting ammonia production.

Assay Principle

Diazyme's ADA Assay is based on the enzymatic deamination of adenosine to inosine which  is converted to hypoxanthine by purine nucleoside phosphorylase (PNP). Hypoxanthine is  then converted to uric acid and hydrogen peroxide (H2O2) by xanthine oxidase (XOD). H2O2 is  further reacted with N-Ethyl-N-(2-hydroxy-3-sulfopropyl)-3-methylaniline (EHSPT) and 4-aminoantipyrine  (4-AA) in the presence of peroxidase (POD) to generate quinone dye which is  monitored in a kinetic manner. The entire enzymatic reaction scheme is shown below.

Intended use

Adenosine deaminase (ADA) assay kit is for determination of ADA activity in serum and plasma samples. For Research Use Only in the USA.

Product Catalog Number Format Method
Kit DZ117A R1/R2 (Dual Vial Liquid Stable) Dual Vial Liquid Stable,
Calibrator DZ117A-Cal Cal: 1 Level (Lyophilized)  
Control DZ117A-Con Con: 2 Level (Lyophilized)  
Regulatory Status