RT Journal Article SR Electronic T1 `Thrombocytopenic serum': an artificial factor VIII-deficient reagent JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 188 OP 190 DO 10.1136/jcp.17.2.188 VO 17 IS 2 A1 E. Davidson A1 S. Tomlin YR 1964 UL http://jcp.bmj.com/content/17/2/188.abstract AB Thrombocytopenic serum is a simple reagent derived from platelet-poor plasma. The high levels of factor V and `zero' levels of factor VIII in this reagent make it a reliable alternative to haemophilia A plasma in the qualitative and quantitative assessment of factor VIII in the thromboplastin generation test.