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Reagent Storage, Stability & Handling
AutoPure Glucose is a single ready to use reagant.
Stable till the expiry date indicated on the label, when stored at 2 -8 C.
On Board Reagent Stability
Do not freeze the reagent.
Components & Concentration of Working Solution
Fully automated system automatically calculates the Glucose concentration of each sample.
Refer to application sheet for details. For additional system applications, contact our local Accurex representative.
For calibration, it is recommended to use C.f.a.s." or any other suitable calibrator material.
Re calibration is recommended
C.f.a.s. is the brand name of Roche
Each batch of AutoPure Glucose is assayed with atleast six quality control sera - Precinorm, Precipath, Biorad l, Biorad 11, Accutrol Normal and Accutrol Abnormal prior to release.
To ensure adequate quality control, it is recommended that the laboratory should use a normal and abnormal commercial reference control serum. It should be realized that the use of quality control material checks both the reagent and instrument functions together.
If the control values fall outside the specified limits, each of the below criteria should be cross checked and corrected:
Fasting blood glucose
60 -110 mg/dl
3.33 - 6.11 mmo1/1
Postprandial blood glucose
< 145 mg/dl
< 8.05 mmo1/1
Expected range varies from population to population. It is therefore recommended that each laboratory should establish its own normal range. For diagnostic purposes, the glucose results should always be assessed in conjunction with the patient's medical history, clinical examinations and other findings. The whole blood glucose value is generally 10 - 15% lower than the serum or plasma glucose value due to the cell stroma.
With AutoPure Glucose, the assay is linear upto 500 mg/dl (27.75 mmo1/1). Determine samples with higher concentrations via the rerun function. On instruments without rerun function, manually dilute samples with higher concentrations using 0.9% NaCI or distilled/deionized water (e.g.1 + 2). Multiply the result by the appropriate dilution factor (e.g. 3).
There is no significant interference in samples containing upto 20 mg/dl of bilirubin and 750 mg/dl of haemoglobin.
Reproducibility was determined using quality control sera as shown below:
Quality Control Material
Co Relation Studies
A comparison of the glucose determination using AutoPure Glucose and Infinite Glucose reagent gave the following co-relation (mg/di):
No. of samples measured : 89
The sample concentrations measured were between 52 and 160 mg/dl