von Willebrand Factor Panel
| Abbrev Code: | IndivCodes | ||
| Order Instructions: | Order Indiv Codes. | ||
| Synonyms: | VWF Panel; VWF Panel (F8, Antigen, Activity); von Willebrand Factor Panel (F8, Antigen, Activity) | ||
| Methodology: | See individual test listings | ||
| Test Includes: | Factor 8 activity, VWF antigen and a VWF activity assay (VWF activity or VWF activity (done at UMMC East Bank) with reflex to Ristocetin Cofactor Activity and von Willebrand factor multimers (done at ARUP). | ||
| Turnaround Time: | Specimen is accepted and processed 24 hours/day. Tests are performed 1-3 times/week. Results are reported in 2-7 days. | ||
| Special Instructions: | See individual test codes for billing information and turnaround times. Ristocetin Cofactor Activity and VWF multimers are sent to ARUP Laboratories and may not be sent per VWF algorithm and pathologist evaluation. See Associated Links. | ||
| Associated Links: | Specimen Collection and Processing for Coagulation Specimens, von Willebrand Factor (VWF) Panel Algorithm, von Willebrand Factor (VWF) Screen Algorithm |
||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | Three 3 mL tubes, each containing 2.7 mL blood; each filled to fill line on the tube. |
| Minimum\Peds Volume: | Two 3 mL tubes, each containing 2.7 mL blood; each filled to fill line on the tube. |
| Container: | Blue Na Citrate, 3.2% - fill to fill line on tube |
| Collection Instructions: | See link to Specimen Collection and Processing for Coagulation Specimens. |
| Causes for Rejection: | Underfilled tube or clotted specimens. Hemolyzed, icteric or lipemic specimens. |
Processing and Shipping
| Specimen Processing: | See link to Specimen Collection and Processing for Coagulation Specimens. |
| Shipping Instructions: | See link to Specimen Collection and Processing for Coagulation Specimens. |
| Test Performed at or Referral Lab | Special Coagulation (UMMC East Bank) |
Interpretive
| Reference Range: | See individual test listings. |
| Use: | See individual tests listings. |
Click HERE to Report test errors or omissions.
*If no email program is associated with this computer, please contact:
[email protected] for TestID: 3962"