上海实验生物研究所曾报导用乙胎蛋白检测肺癌和胃癌。最近证实乙胎蛋白即为纤维蛋白原一类物质。我们采用液流泳法检测患者血清中纤维蛋白原结果:肺癌的阳性率为81.3％,其它肿瘤和疾病阳性率均低、正常人血清中纤维蛋白原为阴性。纤维蛋白原虽不是肺癌的特异性抗原、但对肺癌的诊断有其一定的参考价值。现将结果和方法报导如下: The Shanghai Institute of Experimental Biology has reported using beta-fetoprotein to detect lung cancer and gastric cancer. It has recently been confirmed that beta-fetoprotein is fibrinogen-like. We used fluid-flow method to detect fibrinogen in the patient’s serum: the positive rate of lung cancer was 81.3%, the positive rate of other tumors and diseases was low, and fibrinogen in the serum of normal people was negative. Although fibrinogen is not a specific antigen of lung cancer, it has certain reference value for the diagnosis of lung cancer. The results and methods are reported as follows: