Abstract
An enzymatic fluorimetric method is described for the determination of total bile acids (cholic acid and deoxycholic acid), primary bile acids (cholic and chen acids and individual bile acids in serum without prior separation of the acids. Total and primary bile acids are determined by equilibrium procedures by conver of the 3α- and 7α-hydroxy bile acids to 3-oxo and 7-oxo bile acids by α-NAD +, in the presence of 3α- and 7α-hydroxysteroid dehydrogenase (HSD), respectively, and measurement of the generated NADH fluorimetrically. Chenodeoxycholic acid is determined with 7α-HSD in the presence of cholic and deoxycholic acids by a differential kinetic procedure, and cholic and deoxycholic acids are calculated by difference. Interferents are removed by treatment of serum with Sachrom rein. Only 1.00 ml of serum is required. Low cost, simplicity and reliability are the main features of the method. The recovery of bile acids added to serum averaged 103% (range 83–122%). The method is suitable for routine use in small clinical laboratories.
Published Version
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