Potassium (Enzymatic) Assay
Request package insert information
Product Features
The assay is linear from 0–300 U/L (r2 >0.99) with intra-assay %CV of less than 4.5% and an inter-assay %CV of less than 6.0%. The assay is specific for 5’-NT and has no detectable reaction with other nucleosides. The assay is not affected by interfering substances such as serum bilirubin up to 40 mg/dL, hemoglobin up to 500 mg/dL, triglycerides up to 1250 mg/dL, ascorbic acid up to 20 mg/dL, and alkaline phosphatase up to 1250 U/L. Stable for 12 months from date of manufacture when stored @ 2°- 8°C.
Assay Principle
Potassium is determined spectrophotometrically through a kinetic coupling assay system using potassium dependent S-Adenosylmethionine Synthase (MAT). NADH is generated after a series of enzymatic reactions. The corresponding increase of optical density at 340nm is proportional to the potassium concentration in the serum.
Intended Use
For in vitro quantitative determination of potassium in fresh human serum. Measurements obtained by this assay are used to monitor electrolyte balance in the diagnosis and treatment of diseases conditions characterized by low or high blood potassium levels. For IVD use only.
Product Catalog Number Packaging Method/Format
Kit (720 Tests) DZ113C-K R1: 4 x 40 mL
R2: 4 x 10 mL		 Enzymatic
Liquid Stable
Calibrator DZ113C-Cal 2 x 3 mL  
Control DZ113C-Con 2 x 3 mL