ARUP's Laboratory Test Directory
| 0030007: Factor II, Activity (Prothrombin) |
| Test Mnemonic: F2 | |
|
Methodology: Clotting
Performed: Tue, Thu Reported: 1-6 days |
| Specimen Required: | |
|
Collect: One 5 mL lt. blue (sodium citrate). (Min: 3 mL) Refer to the Hemostasis/Thrombosis Specimens section in the front of this User's Guide for special collection instructions.
Transport: 2 mL platelet-poor plasma, frozen. (Min: 1 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 1 mL platelet-poor plasma, frozen. Remarks: CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered. Unacceptable Conditions: Serum. Nonfrozen or hemolyzed specimens. Stability: Ambient: 4 hours; Refrigerated: 4 hours; Frozen: 2 weeks |
|
| Reference Interval: |
|
1-4 days: 26-70% 5-29 days: 33-93% 30-89 days: 34-102% 90-179 days: 45-105% 180-364 days: 60-116% 1-6 years: 71-116% 7-9 years: 78-125% 10-11 years: 78-120% 12-13 years: 72-126% 14-15 years: 74-135% 16-17 years: 77-130% 18 years and older: 86-150% |
| Note: | |
| Do not order for prothrombin mutation. |
| CPT Code(s): | |
| 85210 |