von Willebrand Antigen

Centralized Core Laboratory:Hematology

Test ID/Workstation: VWFAG SPCOG

Specimen Type: Blood

Tube Type: Blue top (sodium citrate) tube

Collection Volume: 2.7 mL

Cause for rejection: Sample hemolyzed, clotted, diluted with IV fluid; contaminated with heparin; improperly filled; not kept on ice; received > 1 hour after drawn

Storage: Frozen

Availability: Mon-Fri (0700-1400)

Methodology: Electroimmunodiffusion Assay (EIA)

Special Instructions: A Factor VIII Coagulant Activity and a PTT determination should be performed in conjunction with this test in order to aid with the interpretation of test results.


Lab/Phone: 330-543-8416

TAT: 2 weeks

Additional Info: Reference range:

0-1 day: 36-315%
2-5 days: 50-279%
6-30 days: 19-270%
1-3 months: 57-226%
4-11 months: 32-216%
1-5 years: 60-132%
6-10 years: 44-158%
11-16 years: 46-168%
Adult: 50-173%

CPT Code: 85244

Synonyms: Antigenic Factor VIII; Factor VIII Related Antigen

Requisition Form
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Contact Us

330-543-1000 (operator)

(8 a.m.-4:30 p.m.)


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