Methodology
Clotting Bethesda Titer
Synonyms
Factor 8
Specimen Type
Plasma
Performing Lab
Versiti Wisconsin Hemostasis
Epic ID
Other Reference Test
Lab Test Days
Monday-Friday
Standard TAT
7 Days
Collection Information
Specimen Required
(two-three) 1.8 mL or (two) 2.7 mL Blood
Container Type
Light Blue (Sodium Citrate)
Processing Information - Lab Use Only
Transport Temperature
Frozen-Only
Specimen Stability
Room Temp: Unacceptable; Refrigerated: Unacceptable; Frozen: 14 Days
Rejection Criteria
Thawed specimens
Test Volume Required
(x2) 1 mL Plasma
Minimum Test Volume
1.5 mL Plasma
Processing Instructions
Complete a Versiti Wisconsin Hemostasis requisition and submit with specimen frozen.
Included Tests
Factor VIII Activity and Porcine Factor VIII Inhibitor.
CPT Codes
85240, 85335
Revised
01-26-19
Initials
SL