本文报道20例原发性肝癌、70例肝硬化、36例健康人的血浆 CH_(50)值。结果,各组 CH_(50)均数分别为肝癌组33.55μ/ml,肝硬化组18.03μ/ml,健康人组26.98μ/ml。前者显著高于后两者(P<0.01)。硬化型肝癌13例中4例和非硬化型肝癌7例中5例的 CH_(50)超过正常范围,但肝硬化70例中无1例 CH_(50)超过正常范围者。结果提示,血浆 CH_(50)的测定对原发性肝癌的诊断有一定的参考意义。 This article reports the plasma CH_(50) values ​​of 20 cases of primary liver cancer, 70 cases of cirrhosis, and 36 healthy persons. As a result, the mean CH_(50) in each group was 33.55 μ/ml in the liver cancer group, 18.03 μ/ml in the cirrhosis group, and 26.98 μ/ml in the healthy group. The former was significantly higher than the latter two (P<0.01). The CH_(50) in 4 of 13 cases of sclerosing liver cancer and 7 of non-sclerosing liver cancer exceeded the normal range, but none of the 70 cases of cirrhosis had CH_(50) exceeding the normal range. The results suggest that the determination of plasma CH_(50) has certain reference significance for the diagnosis of primary liver cancer.