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Clinical Chemistry, Vol 38, 522-525, Copyright © 1992 by American Association for Clinical Chemistry
R Relijic, M Ries, N Anic and B Ries
Faculty of Food Technology and Biotechnology, Laboratory of Biochemistry, Zagreb, Croatia.
We describe a colorimetric assay for glucose determination in human serum, with use of the chromogen 2-amino-4-hydroxybenzenesulfonic acid (AHBS), glucose oxidase, and peroxidase. With this assay, glucose concentrations less than or equal to 27.8 mmol/L can be measured in serum, with a sample/reagent volume ratio as low as 0.0025. The chromogen itself is easily soluble in water and does not require other components for the color change, making the reagent composition less complex. A single working reagent is used, and the reaction is completed within 10 min at 37 degrees C. The absorbance of the yellow reaction product is measured at 415 nm, and a blank sample measurement is not needed. The average analytical recovery of glucose in different human sera was 97.6%, with no significant interference of reducing compounds in serum. The results of the recommended procedure correlated well with those of the phenol/4-aminoantipyrine method of Trinder.
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