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In the past few years there has been renewed interest in the study of serum cholinesterase in various disease states, particularly those affecting the liver. Recently, a colorimetric method for the determination of this enzyme in the serum was reported by Ravin, Tsou, and Seligman (1). Their method, simple to perform, is as accurate as the gastrometric technique and more specific than the electrometric (2, 3). These advantages seemed to warrant an evaluation of its usefulness in prognosis of hepatic disease and in the differential diagnosis of jaundice.

COLORIMETRIC DETERMINATION OF SERUM CHOLINESTERASE: ITS VALUE IN HEPATIC AND BILIARY TRACT DISEASES 1