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Clinical Chemistry 31: 1985-1987, 1985;
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Clinical Chemistry, Vol 31, 1985-1987, Copyright © 1985 by American Association for Clinical Chemistry

Enzymatic determination of serum ethanol with membrane-bound dehydrogenase

H Takei, K Nakashima, O Adachi, E Shinagawa and M Ameyama

In this enzymatic method for detecting ethanol in blood by use of membrane-bound microbial alcohol dehydrogenase (no EC no. assigned), the enzyme catalyzes the reaction irreversibly and the rate of oxidation can be monitored by spectrophotometry of the reduction of the indicator dye. No pyridine nucleotides such as NAD+ or NADP+ are used. The calibration curve is linear in the range of 0.1 to 4.0 g of ethanol per liter. Assays of 45 samples of serum having ethanol values ranging from 0.4 to 3.2 g/L by the described technique and a gas- chromatographic method gave respective means of 1.734 and 1.732 g/L (r = 0.954).




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