A plate-diffusion technique for the quantitative assay of amylase in body fluids is described which is dependent on the incorporation of a soluble amylopectin-dye complex into agar. The technique correlates well with other established amylase assays, and has a coefficient of variation of 1.45 for amylase levels within the normal range for serum.
Normal levels of amylase in serum and urine are reported which agree with those recorded by previous workers, and in addition values of amylase in semen, saliva, and tears are quoted.
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