vWF
Plasma
Quest Diagnostics San Juan Capistrano
LAB01409
(four-five) 1.8 mL or (three-four) 2.7 mL Blood
Light Blue (Sodium Citrate)
Frozen-Only
Room Temp: Unacceptable; Refrigerated: Unacceptable; Frozen: 14 Days
Received room temp; Received refrigerated
(four) 1 mL Platelet-Poor Plasma
(four) 0.75 mL Platelet-Poor Plasma
Platelet poor plasma: Centrifuge light blue-top tube 15 minutes at approx. 1500 g within 60 minutes of collection. Using a plastic pipette, remove plasma, taking care to avoid the WBC/platelet buffy layer and place into a plastic vial. Centrifuge a second time and transfer platelet-poor plasma into a new plastic vial. Plasma must be free of platelets (<10,000/mcl). Freeze immediately and send frozen.
Partial Thromboplastin Time, Activated; Factor VIII Activity, Clotting; von Willebrand Factor Antigen; Ristocetin Cofactor; von Willebrand Antigen, Multimeric Analysis; Interpretation.
Included in test code 9711CS Bleeding Diathesis Panel. Do NOT order together. Storage of whole blood at refrigerated temp prior to processing may lead to cryoprecipitate formation and falsely low Factor VIII and von Willebrand Factor studies.
85240, 85245, 85246, 85247, 85730
09-19-19
SL