Abstract
G. V. Marinetti has reported phospholipase A of snake venom to cause clearing of a suspension of egg yolk. Based on this fact the rapid and convenient assay method for phospholipase A has been studied. The present assay method is affected by various factors such as pH, ion and ionic strength of the reaction mixture, but under well controlled conditions it is useful and highly sensitive. This method, however, has a disadvantage that the standardization of the assay unit during the long course of the test is very difficult.
