Principle
Cholesterol esterase hydrolysis cholesterol esters into free cholesterol and fatty acids. In the second reaction cholesterol oxidase converts cholesterol to cholest-4-en-3-one and hydrogen peroxide. In presence of peroxidase, hydrogen peroxide oxidatively couples with 4 amino antipyrine and phenol to produce red quinonimine dye which has absorbance maximum at 510 nm. (500 530), The intensity of the red color is proportional to the amount of total cholesterol in the specimen.
Procedure
Reaction type …………… End-Point (2 Step)
Reaction time …………….. 5 + 5 mins.
Wavelength ……………. 546 nm.
Flow Cell temperature…………… 37°C
Zero setting with ……………… Distilled water
Sample volume …………………. Q.01 ml (10 μt)
Reagent volume ……………. 0.750 ml + 0.250 ml
Linearity ………………………. 450 mg/dl
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.
Other Details
The kit should be stored at 2- 8C and is stable till the expiry date indicated on the label. The reagent and standard are ready-to-use and are stable till expiry when stored at 2- 8°C. DO NOT FREEZE THE REAGENT.
The reagent should be stored only in the amber bottle provided to protect it from direct light. Before using, swirl in the reagent gently. DO NOT SHAKE VIGOROUSLY.
Over time, the reagent may develop a light pink color. This is expected and does not affect the reagent performance. Discard the reagent if the absorbance of the same exceeds 0.300 O.D. against distilled water at 510 nm.
Contamination of the reagent should be strictly avoided. Should the reagent develop turbidity and discard the reagent.
Ashraf Shaikh –
Very good products with superior quality.
Shine Kudu –
I am using glucose cholesterol. It is good and satisfied in your product
Sukkhu Unnikrishnan –
I’m yr Customer of glucose, TG ,and cholesterol.. Products are good
Ramakant Maheshwari –
I am using alp 300 or cholesterol 250. About quality is perfect
Vijendar Singh –
Accurex is one the best company in diagnostics. Reagents which I used is very good in quality. TG cholesterol glucose and direct hdl which I used never faced problem