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For hours, walk-ins and appointments.Specimen Requirements
Specimen
Plasma (3.2% citrated), frozen
Volume
1.5 mL
Minimum Volume
0.8 mL
Container
Plastic transfer tube
Collection
Venipuncture with conservative tourniquet use; centrifuge whole blood to obtain platelet-poor plasma. Transfer plasma into a plastic transport tube. Freeze at -70°C.
Storage Instructions
Freeze.
Stability Requirements
Temperature | Period |
|---|---|
Frozen | 1 month |
Freeze/thaw cycles | Stable x5 |
Test Details
Use
This test is used for quantitative determination of the von Willebrand factor-GPIb activity and can be used as an aid in the evaluation of patients with suspected or confirmed von Willebrand factor disorders.
Methodology
Latex-based turbidimetric
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 520553 | VWF GPIbM Activity | 520554 | VWF GPIbM Activity | BU/mL | Pending |
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