Factor VIII Assay

Centralized Core Laboratory:Hematology

Test ID/Workstation: FVIII ACOAG

Specimen Type: Blood

Tube Type: Blue top (sodium citrate) tube

Collection Volume: 2.7 mL (minimum 1.8 mL)

Must use appropriate sodium citrate tube based on volume of blood drawn (1.8 mL or 2.7 mL tube)

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

Storage: Frozen

Availability: Daily (0700-1500)

Methodology: Photometric/Turbidometric

Special Instructions: Call CCL in advance to schedule test. Indicate the time replacement therapy was administered, amount & type of therapy given, whether the specimen was drawn pre-treatment or post-treatment and the time drawn. Indicate if a specimen has been drawn from an arterial line or from a line that has been rinsed with heparin.

Lab/Phone: 330-543-8416

TAT: 4 hours

Additional Info: Reference range:

50-170%

CPT Code: 85240

Synonyms: Antihemophiliac Factor (AHF)

Requisition Form
View and print a requisition form for this test

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