ARUP's Laboratory Test Directory
| 0030075: Factor V, Activity |
| Test Mnemonic: F5 | |
|
Methodology: Clotting
Performed: Tue, Thu Reported: 1-6 days |
| Specimen Required: | |
|
Collect: One 5 mL lt. blue (sodium citrate). Refer to the Hemostasis/Thrombosis Specimens section in the front of this User's Guide for specimen collection instructions. (Min: 3 mL)
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 |
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| Reference Interval: |
|
1-4 days: 36-108% 5-29 days: 45-145% 30-89 days: 62-134% 90-179 days: 48-132% 180-364 days: 55-127% 1-6 years: 79-127% 7-9 years: 69-132% 10-11 years: 66-136% 12-13 years: 66-135% 14-15 years: 61-129% 16-17 years: 65-131% 18 years and older: 62-140% |
| Note: | |
| Do not order for factor V Leiden. |
| CPT Code(s): | |
| 85220 |