FACTOR XII ACTIVITY

Test Documentation
Specimen Required
Draw blood in a light blue 3.2% sodium citrate tube. See appendices for coagulation test collection instructions. Send 2.0 mL plasma (1.0 mL minimum) frozen in a screw-capped plastic vial.

Rejection Criteria
Serum, non-frozen or hemolyzed specimens

Methodology
Clotting

Stability
Room Temeprature: 4 hours; Refrigerated: 4 hours; Frozen: 14 days

Reference Range
58-166%

Performed
Monday-Friday

Turnaround Time5-7 days
Test CodeF12AR
CPT-4 Code (s)
85280
LOINC Codes
3232-6

Warde
Medical
Laboratory