测定甲胎蛋白诊断原发性肝癌是属于免疫诊断法。它是利用抗原、抗体在体外出现的反应,来诊断疾病。 1964年以来,有人开始用检测胎儿甲种球蛋白(简称甲胎蛋白)的方法来诊断肝癌。为什么呢? 我们知道,在人体胚胎发育过程中,胎儿的肝细胞产生一种特殊蛋白质,叫作胎儿甲种球蛋白。它是胎儿血液中的正常成份。在胎儿出生一周后即自行下降到极微量,甚至 Determination of alpha-fetoprotein diagnosis of primary liver cancer is an immunodiagnostic method. It uses antigens and antibodies to react in vitro to diagnose diseases. Since 1964, some people have started to diagnose liver cancer by testing fetal alpha-globin (AFP). Why? We know that during the development of human embryos, the fetal hepatocytes produce a special protein called fetal gamma globulin. It is a normal component of fetal blood. One week after the fetus was born, it dropped to a very small amount, even