Serum a1-antitrypsin (a1-AT)

a1-acid glycoprotein (a1-AG) and haptoglobin (HP) were determined in 100 patients with primary hepatocelluler carcinoma (HCC)

25 with pulmonary carcinoma

25 with oophoroma

30 with larygocarcinoma

87 with nasopharyngeal carcinoma

139 with benign diseases and 60 normal blood donors by single radial immunodiffusion (SRID). Serum a1-AT

a1-AG and HP levels were all significantly elevated in patients with five cancers above as compared with those benign diseases or normal blood donors. By application of the stepwise discriminatory analysis

discreminatory formula has been established for seven groups data. Let all data to back substitution

among normal blood donors

benign diseases and HCC-three group’s rate of consistency are over 60 persent. The experiment results indicate that index is expounded in patients with cancers

especially in HCC for differential diagnosis