the factor viii clotting activity assay ( viii : c ) and the rocket immuno-electrophoresis assays of von willebrand factor related antigen ( vwf r : ag ) , antithrombin iii , protein c and histidine-rich glycoprotein showed the highest between-duplicate and between-day coefficients of variation ( cvs ) , whereas the clotting assays of activated partial thromboplastin time and fibrinogen had the lowest cvs .
C1336938
vwf
C0005778
clotting