Von Willebrand Antigen Assay
| Order Code: | VWAG |
| Order Form: | Laboratory Requisition |
Specimen:
Plasma
Collection Medium:
 |
| Light Blue top tube 2.7 mL (Na Citrate) |
Minimum:
Full draw; 2.7 mL light blue top
Testing
Schedule:
0800-1630 Monday through Friday.
Reference Range:
41-152%
Comments:
This test needs a separate tube! It CANNOT be done with any other
coagulation tests.
Methodology:
Latex agglutination, absorption spectrophotometry
Sample
Processing:
Centrifuge within two hours of draw time.
Aliquot serum/plasma into plastic container and cap (glass is not acceptable).
Centrifuge a second time at 3500 RPM for 10 minutes and aliquot into a new, labeled plastic tube.
Aliquot serum/plasma into plastic container and cap (glass is not acceptable).
Centrifuge a second time at 3500 RPM for 10 minutes and aliquot into a new, labeled plastic tube.
Sample
Storage:
Freeze specimen immediately.
Transport
Instructions:
Place specimen into zip-lock type bag, seal bag.
Place requisition into outside pocket of bag.
Place dry ice on top of specimen in styrofoam container.
Place requisition into outside pocket of bag.
Place dry ice on top of specimen in styrofoam container.
CPT Code:
85246
See Additional Information:
Phlebotomy Tubes and Order of Draw
Phlebotomy Tubes and Order of Draw