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HelpTest Code FAC11 Factor XI
Additional Codes
Epic EAP: LAB309
Epic Description: FACTOR 11 ASSAY
Synonym
Factor XI Activity
Factor XI Assay
Specimen Type
Blood
Specimen Required
| Collection Container | Preferred Volume | Minimum Volume | |
|---|---|---|---|
| Preferred |
Light Blue, Sodium Citrate |
1 X 2.7 mL | 1.8 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 400 uL
Performing Lab
Hematology Lab
Assay Frequency
Monday thru Friday (8:00am- 2:00pm)
Routine Turnaround Time
1-2 days, excluding weekends and holidays.
CPT Code Information
85270