Abstract
Cephalin-cholesterol flocculation reaction is inhibited by the addition of lecithin into the reagent. Addition of lecithin in a ratio of 0.05-1 against 1 part of cephalin caused the reduce in positive reactions in the order of the increase in the amount of lecithin becoming negative in the end. By the addition of lecithin in a certain ratio, however, the reaction becomes specifically positive on the sera of hepatic disturbance. Addition of lecithin, moreover, makes it easy emulsify the reagent and the reagent once emulsified is able for the storage of several days.
A reagent which is stable and gives positive reactions on the sera of hepatic disturbance alone was prepared by the fractionation of cephalin into phosphatidyl-cerin and dy the addition of lecithin in compliance with the specificity of the reagent obtained.
