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| Primary Name |
Von Willebrand Factor Multimeric Analysis |
| Synonym |
Von Willebrand factor multimers |
| Synonym |
-- |
| Contraction |
-- |
| Contraction |
-- |
| Contraction |
-- |
| UAB Procedure Number |
3500875 |
| CPT Code |
85247 |
| Specimen |
Collect two (2) blue-stopper tubes (3.2% sodium citrate), filled to specified volume. Do not underfill or overfill. |
| Specimen Management |
Centrifuge blue-stopper tubes within one (1) hour of collection, separate plasma and test or quick-freeze at -70°C. |
| Specimen Accepted |
Daily including weekends |
| Times Available |
0730-1600 |
| Test Performed |
Assay is performed by reference laboratory. Results available in two weeks. |
| Available Stat? |
Pathologist's approval required. |
| Description |
The von Willebrand factor multimeric analysis is used to distinguish type 2 von Willebrand disease from type 1 and to distinguish between types 2A and 2B. The multimer assay is suggested in follow-up to the von Willebrand profile, consisting of the ristocetin cofactor, von Willebrand factor antigen, and factor VIII activity. |
| Reference Interval |
Normal multimeric pattern |
| Critical Value |
-- |
| Therapeutic Range |
-- |
| Follow-up Test |
-- |
| Associated With |
Bleeding disorders |
| Associated With |
Von Willebrand disease |
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