“…Among them, APTT on CS‐2000i and STA‐R Evolution (activator: kaolin) and ACL Top 700 system prolonged by 5 second at most, 0.5 second, 1.0 second, respectively. Different detecting systems have different methodology, and the mixed plasma’s APTT without any purified CRP was 34.5 second, 30.7 second, 37.7 second, 30.6 second in STA‐R Evolution (activator: silica), STA‐R Evolution (activator: kaolin), ACL Top 700, and CS‐2000i, respectively.…”