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Test Code VWFA VON WILLEBRAND FACTOR ANTIGEN

Additional Codes

Primary ID

Epic Code

Mayo Access ID

VWFA

LAB307 FAH5365

Specimen Information

Container

Specimen

Temperature

Collect Vol

Submit Vol

Minimum Vol

Stability
Blue Top Tube Plama Frozen To fill line 2 mL plasma 0.5 mL plasma 6 months
Blue Top Tube Whole Blood Ambient To fill line To fill line To fill line 4 hours

Refer to Coagulation Specimen Handling prior before collection. Submit 2 × 0.5 mL frozen plasma aliquots for this test. Draw blood in light blue top tube(s). If sample can be submitted within 3 hours, submit whole blood at ambient temperature. If this is not possible, spin down tube and remove plasma.  Spin plasma again and place citrate platelet-poor plasma in required number of plastic vials (Glass vials cannot be accepted.) Freeze specimen at less than or equal to minus 40° C if possible. Send specimen frozen on dry ice. Each coagulation assay requested should have its own vial.

Test Schedule / Analytical Time / Test Priority

Tuesday, Thursday / 1 day / Available STAT, nights and weekends with pathologist approval

Method

Immunoassay

CPT(s)

Description CPT Code
VWF Antigen 85246

 

Instrumentation

ACL Top 500

Reference Range

50 – 185%

Section

Coagulation

Performing Location

University of Vermont Medical Center

Is the UVMMC lab NY State Certified to perform this testing?  Yes/No

Yes

LOINC Code Information

Result Code Reporting Name LOINC Code
VWFA VWF Antigen 27816-8