Electrophoretic Separation of Alkaline Phosphatase Isoenzymes: A Clinical Evaluation

In 40 patients with a raised total serum alkaline phosphatase, polyacrylamide gel electrophoresis was used to separate the liver, bone and intestinal isoenzymes of alkaline phosphatase. The method confirmed the source of the raised alkaline phosphatase in patients with established bone or liver disease. The technique was found to be more reliable than the estimation of 5'-nucleotidase activity in the detection of a raised alkaline phosphatase of hepatic origin and was also useful when the raised total alkaline phosphatase came from two sources.

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