Factor XI, Activity
Label Mnemonic: F11
Epic Lab Code: LAB8662
Downtime Form: A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery
Commercial Mail-out Laboratory
5231 RCP
356-8593
Specimen(s):
Platelet-Poor Plasma
Specimen Instructions:
Separate specimens must be submitted when multiple tests are ordered.
Collection Medium:
Light Blue top tube 2.7 mL (Na Citrate)
Minimum:
Absolute Minimum: 1 mL platelet poor plasma in light blue top tube
Rejection Criteria:
Serum. EDTA plasma, clotted or hemolyzed specimens.
Delivery Instructions:
Deliver to laboratory immediately after collection. Critical frozen.
Turn Around Time:
1-3 days upon receipt at reference laboratory
Reference Range:
Age Reference Interval
1-4 days 10-66%
5-29 days 23-87%
30-89 days 27-79%
90-179 days 41-97%
180-364 days 38-134%
1-5 years 56-150%
6 years 52-120%
7-9 years 70-138%
10-11 years 66-137%
12-13 years 68-138%
14-15 years 57-129%
16-17 years 65-159%
18 years and older 56-153%
Comments:
This test is ordered to diagnose factor XI deficiency (hemophilia C).
Methodology:
Electromagnetic Mechanical Clot Detection
CPT Code:
85270