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Test ID BLOD0371 Von Willebrand Workup

Specimen Type/Requirements

Blue top (Sodium Citrate) – Double Spun Platelet Poor Plasma

 

Separate sample into 3 aliquots with 1.0 mL of platelet poor plasma in each aliquot.

Pediatric minimum: Separate sample into 2 aliquots with 1.0 mL of platelet poor plasma in each aliquot.

See  Coagulation Testing and Platelet Poor Plasma Preparation

 

Test is affected by hemolysis and lipemia.

Specimen Volume

 Preferred Volume     3.0 mL   
 Minimum Volume     2.0 mL (pediatric minimum)   

 

Stability/Transport

 Room Temperature     Not Acceptable     
 Refrigerated     Not Acceptable     
 Frozen     4 weeks     Preferred for transport   

 

Performed Test Frequency

Mondays and Thursdays

Methodology

See individual tests.

Performing Lab

Sanford Laboratories Sioux Falls

CPT

85240
85246
85397

Additional Information

VonWillebrand Workup includes the following:
·         Von Willebrand Factor Activity
·         Von Willebrand Factor Antigen
·         Factor VIII (8) assay
·        Interpretation