用加与不加活化蛋白Ｃ（ＡＰＣ）的两个白陶土部分凝血活酶时间（ＡＰＴＴ）试验来测定人血浆中的ＡＰＣＲ，并对１００例正常人（男女各５０例）ＡＰＣＲ的发生率进行检测，结果表明，其发生率高达４％，男女无差异。本文同时对蛋白Ｃ（ＰＣ）、蛋白Ｓ（ＰＳ）的发生率进行了检测，检出一例ＰＣ缺乏患者，被检人群未见ＰＳ异常。作者阐述了ＡＰＣＲ高发生率在血栓疾病中的重要意义及有关致病机理，并简述了ＰＣ、ＰＳ缺乏的发生率及临床意义。 The APCR of human plasma was measured using two kaolin partial thromboplastin time (APTT) assays with and without activated protein C (APC) and the incidence of APCR was determined in 100 normal subjects (50 men and women) Test results showed that the incidence of up to 4%, no difference between men and women. In this paper, the incidences of protein C (PC) and protein S (PS) were also examined. One patient with PC deficiency was detected, and no PS abnormalities were detected in the subjects. The author described the high incidence of APCR in thrombosis disease significance and pathogenesis, and briefly described the incidence of PC, PS and its clinical significance.