| Test CODE | NAME |
|---|
S104
Von Willebrand Factor, Activity (Ristocetin Cofactor)
| Methodology: | Platelet Agglutination |
| Performed: | Mon-Sat |
| Reported: | 3-5 days |
| Specimen Required: |
Collect: Lt. Blue (sodium citrate) - 2 ml plasma. Specimen Preparation: Transfer platelet-poor plasma to a Standard Transport Tube. Storage/Transport Temperature: CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered. Unacceptable Conditions: Serum. Hemolyzed or non-frozen specimens. Stability : Refrigerated: Unacceptable; Frozen: 1 week |
| CPT Code(s): | 85245 |