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HelpTest ID BLOD0371 VonWillebrand Workup
Specimen Type/Requirements
Blue-Top (Sodium Citrate) Tube. Tubes must be filled to the minimum draw line.
Separate sample into 3 separate aliquots with 1.0 mL of platelet poor plasma in each aliquot.
Pediatric minimum volume is 2 mL of citrated platelet poor plasma,
Separate into 2 separate aliquots with 1 mL of platelet poor plasma in each aliquot.
Specimen Volume
| Preferred Volume | 3 mL platelet poor plasma separated into (3) 1 mL aliquots |
| Minimum Volume | 2 mL platelet poor plasma separated into (2) 1 mL aliquots |
Stability/Transport
| Room Temperature | N/A | |
| Refrigerated | N/A | |
| Frozen | 4 weeks (platelet-poor plasma) | Preferred for Transport |
Performed Test Frequency
Tuesday and Friday
Additional Information
Workup includes:
| Ristocetin Co-Factor Activity | BLOD1232 |
| VonWillebrand Antigen | BLOD0113 |
| Factor VIII (8) Assay | BLOD0661 |
Methodology
See individual tests.
Performing Lab
Sanford Laboratories Fargo- Core Lab
CPT
85240
85246
85245
Report Available
1-4 days