You are here: Geisinger Medical
Laboratories > Test
Catalog
Geisinger Medical Laboratories Test Catalog
VON WILLEBRAND ANTIGEN, MULTIMERIC ANALYSIS |
||
Geisinger Epic Procedure Code: LAB3773
Geisinger Epic ID: 7128
|
||
SPECIMEN COLLECTION |
||
Specimen type: |
Plasma | |
Preferred collection container: |
||
Specimen required: |
1 mL platelet poor plasma. Please submit a separate frozen aliquot for this test. It may not be combined with any other test requiring a frozen aliquot. | |
Special notes: |
Tubes must be filled to completion to ensure the proper 9:1 blood to anticoagulant ratio is achieved. Specimen should be collected before coagulation factor replacement therapy is started. Specimen must be centrifuged within 60 minutes of collection. | |
Patient preparation: |
Specimen should be collected before coagulation factor replacement therapy is started. | |
| SPECIMEN PROCESSING |
||
Specimen processing instructions: |
Centrifuge at 1500 x g within 60 minutes of collection. Remove plasma to aliquot. Centrifuge plasma a second time and transfer to clean aliquot. Freeze immediately. Specimen must be sent to GMC to do testing for Ristocetin cofactors, Factor 8 assay, and Factor 8 antigen before sending to Quest. | |
Transport temperature: |
Frozen. | |
Specimen stability: |
Room Temperature: Unacceptable. Refrigerated: Unacceptable. Frozen: 6 months. | |
Rejection criteria: |
Thawed plasma received room temperature or refrigerated is unacceptable. Hemolyzed specimens unacceptable. 3.2% citrated plasma, shipped frozen, is the only acceptable sample type. All other anticoagulants (heparin, EDTA, oxalate) are NOT acceptable. | |
TEST DETAILS |
||
CPT code(s): |
85247 | |
| Note: The billing party has sole responsibility for CPT coding. Any questions regarding coding should be directed to the payer being billed. The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only. | ||
Test includes: |
von Willebrand Factor Antigen Multimeric Analysis | |
Methodology: |
Electrophoresis |
|
Synonyms: |
Von Willebrand Factor Multimer, VONWIM Quest test code 5168
|
|