Methods A sample survey was made of the blood regularly provided by the station with prescribed methods. The five items surveyed include HBsAg, HCV-Ah, HIV-Ah, ALT and Wassermann antibody.

• 方法对血站常规供血用规定方法抽查 HBsAg、HCV－Ab、HIV－Ab、ALT、梅霉反应素等 5项。