Test Directory
Factor VIII (8) Activity – Chromogenic (Bovine Reagent)
Justification
Chromogenic Factor VIII (8) Activity allows for the detection of residual Factor VIII (8) Activity in patients receiving the recombinant, monoclonal antibody treatment Hemlibra (emicizumab) that interferes with traditional clotting assays.
STAT: < 24 hours (M-F)
Chromogenic
Draw Tube: Blue Top
Sample Type: Citrated Plasma
Specimen Requirements
Sample Type | Volume Required | Minimum Volume | Stability | |
---|---|---|---|---|
PREFERRED | Citrated Plasma | 1mL | 0.5mL | Frozen (-20C): 2 weeks Frozen (-80C): 6 months |
ALTERNATIVE | - | - | - | - |
REJECTION CRITERIA | Thawed in transit, refrozen or clotted sample |
SPECIAL INSTRUCTIONS | - |
General Information
METHODOLOGY | Chromogenic |
STAT TAT | < 24 hours (M-F) |
STAT TAT Performance | > 90% of results released in 24 hours |
ROUTINE TAT | < 3 days (M-F) |
ALTERNATIVE NAMES | Chromogenic Factor VIII (8) Activity, Factor VIII (8) Activity - Bovine Reagent, Factor VIII (8) Activity - Hemlibra specific, F8 chromogenic, FVIII chromogenic |
DESCRIPTION | Chromogenic assay for the quantitative detection of patient Factor VIII (8) Activity. |
LIMITATIONS | - |
NORMAL RANGE | 50-150% |
ASSOCIATED TESTING | - |
REFERENCES | - |
SAMPLE REPORT | Upon request |
NEW YORK STATE APPROVED | No |
Test Codes
ORDER CODE | P3380 |
CPT CODE | 85240 |
LOINC CODE | 3210-2 |