FACTOR VIII ACTIVITY
Draw blood in a light blue sodium citrate tube. See appendices for coagulation test collection instructions. Send 2.0mL plasma (1.0mL min) frozen in a screw-capped plastic vial; indicated on transport tube specimen type. Call lab for dry ice for shipment
Frozen 3 months
5-7 days Performed Mon-Sat
Diagnosing factor VIII deficiency (hemophilia A) and aiding in the diagnosis of classic von Willebrand disease.