Factor XII, Activity
Label Mnemonic: F12
Epic Lab Code: LAB8663
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 Polasma
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:
58-166%
Comments:
This test is used to evaluate the cause of an isolated prolonged PTT in a patient who is not currently bleeding.
Methodology:
Electromagnetic Mechanical Clot Detection
CPT Code:
85280