Test Details
Methodology
Latex-based turbidimetric
Result Turnaround Time
4 - 7 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
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.
Specimen Requirements
Specimen
Plasma (3.2% citrated), frozen
Volume
1.5 mL
Minimum Volume
0.8 mL
Container
Plastic transfer tube
Collection Instructions
Venipuncture with conservative tourniquet use; centrifuge whole blood to obtain platelet-poor plasma. Transfer plasma into a plastic transport tube. Freeze at -70°C.
Stability Requirements
Temperature | Period |
|---|---|
Frozen | 1 month |
Freeze/thaw cycles | Stable x5 |
Storage Instructions
Freeze.
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 | |
| Order Code | 520553 | |||||
| Order Code Name | VWF GPIbM Activity | |||||
| Order Loinc | ||||||
| Result Code | 520554 | |||||
| Result Code Name | VWF GPIbM Activity | |||||
| UofM | BU/mL | |||||
| Result LOINC | Pending |