Factor VIII Inhibitor, Plasma

Test Code
F8I


CPT Codes
85335

Preferred Specimen
Testing should be performed within 3 hours of draw. Draw blood in a light blue-top (sodium citrate) tube. Spin specimen down, remove plasma, spin plasma again, and place 4 mL of plasma into plastic vial.
Note: Double-centrifuged specimens are critical for accurate results as platelet contamination may cause spurious results.


Transport Temperature
Frozen ≤3 hours 


Methodology
Viscosity Based Detection

Setup Schedule
Monday through Sunday


Reference Range
No inhibitor:  residual factor VIII activity=100%
Bethesda Units:  0.0 - 0.5 Units/mL
 


Performed By
North Mississippi Medical Center Pathology Department

Performing Laboratory
NMMC Pathology Department



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.