Methods Serum samples were collected from 85 intravenous drug abusers (IVDAs), 80 patients with liver diseases (PLDs) and 50 blood donors (BDs).

• 方法 静脉药瘾者 (IVDAs) 85份、肝病患者 (PLDs) 80份和献血员 (BDs) 5 0份血清标本 ,用PCR法检测庚型肝炎病毒RNA ,EIA法检测HBsAg、抗 HCV和抗 HIV ;