Home
HelpTest Code FAC8 | Beaker: LAB306 Factor VIII
Additional Codes
Epic EAP: LAB306
Epic Description: FACTOR 8 ASSAY
Synonym
Factor VIII Activity
Factor VIII Assay
Antihemophilic Factor
Collection Limitations
Note: Factor VIII Assay may be approved in emergency situations outside of the normal testing times by the clinical pathologist on call.
Specimen Type
Blood
Specimen Required
| Collection Container | Preferred Volume | Minimum Volume | |
|---|---|---|---|
| Preferred |
Light Blue, Sodium Citrate |
1 - 2.7 mL tube | 2 x 0.5 mL |
Specimen Stability
Specimens are stable 3 hours at 15-25°C or 4 weeks at -20°C.
Instructions for Collection and Transport
Must be in CSR within one hour of collection.
If the patient’s known hematocrit value is above 55%, an adjustment of the ratio of anticoagulant to blood is necessary. Call the laboratory for a special collection tube for that hematocrit value. Centrifuge ASAP at 3,000 rpm’s for 15 minutes. Aliquot plasma into two plastic vials. Freeze specimen. Transport frozen on dry ice. Do not thaw.
Home Health Agencies:Transport to lab within 1 hour.
Aliquot Requirements
CITRATED Plasma
Optimum 2 X 1.0 mL
Minimum 2 x 0.5mL
Performing Lab
Hematology Lab
Assay Frequency
Monday thru Friday (8:00 am- 2:00 pm)
Routine Turnaround Time
1-2 days, excluding weekends and holidays
CPT Code Information
85240