自Tatarinov等发现的胎儿时期所特有的甲胎蛋白(αFP)在原发性肝细胞癌也有较高的阳性率以来,αFP作为原发性肝细胞癌不可缺少的检查方法,已被广泛地应用。随着检查方法的改进,阳性率也有所提高。用琼脂扩散法可测2～5微克/毫升的水平,原发性肝癌的阳性率为50～80%。近年,西信三等用放射免疫法测定可达到毫微克/毫升的水平,因而原发性肝细胞癌的 Since α-fetoprotein (αFP), which is unique to the fetal period discovered by Tatarinov et al., has a high positive rate in primary hepatocellular carcinoma, αFP has been widely used as an indispensable examination method for primary hepatocellular carcinoma. . With the improvement of inspection methods, the positive rate has also increased. Agar diffusion method can be used to measure the level of 2 to 5 μg/ml, and the positive rate of primary liver cancer is 50 to 80%. In recent years, Xixin III has been measured by radioimmunoassay to reach the level of ng/ml, and thus the primary hepatocellular carcinoma