Principle
Alkaline Phosphatase cleaves p-nitrophenyl phosphate p- NPP)
in the presence of magnesium ions to form p nitrophenol and
phosphate.
The intensity of the yellow color formed is directly proportional to the Application alkaline phosphatase activity in the specimen and measured kinetically.
Procedure
Reaction type……………Kinetic
Reaction direction…………… Up
Wavelength……………405 nm
Flow cell temperature……………37°C(±0.2°C)
Zero setting with……………Working solution
Delay time……………60 seconds
No. of readings……………4
Interval……………30 seconds
Blank absorbance limit……………< 0.700 Abs.
Sample volume……………0.02 ml (20 µl)
Reagent volume…………..1.0 ml
Factor……………2720
Linearity…………….700 IUl/l
Quality Control
To ensure adequate quality control, it is recommended that each batch should include normal and an abnormal commercial reference control serum. It should be realized that the use of quality control material checks both instrument and reagent functions together. Factors which might affect the performance of this test include proper instrument function, temperature control, cleanliness of glassware and accuracy of pipetting.
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