Latex Antistreptolysin O Test as a Tube Dilution Procedure

Abstract
Recently, several investigators reported on the usefulness of a latex antistreptolysin O (ASO) test as a screening procedure for the detection of elevated ASO titers. The present report deals with applications of a variant of this technic to the quantitation of ASO titers in serum. One hundred fourteen serum specimens were analyzed for ASO activity by this tube dilution technic and by two standard hemolytic methods, the Todd method and the International Unit procedure. The results with all three assays were comparable.

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