ARUP's Laboratory Test Directory
| 0030110: Factor XI, Activity |
| Test Mnemonic: F11 | |
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#ExistMethodology>
Methodology: Clotting
*ExistMethodology> #ExistPerformed> Performed: Mon, Wed, Fri *ExistPerformed> #ExistReported> Reported: 1-4 days *ExistReported> |
| Specimen Required: | |
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#ExistCollect>
Collect: One 5 mL lt. blue (sodium citrate). Refer to the Hemostasis/Thrombosis Specimens section in the front of this User's Guide for special collection instructions.
*ExistCollect> #ExistTransport> Transport: 2 mL platelet-poor plasma (lt. blue, sodium citrate), frozen. (Min: 1 mL) Submit specimen in an ARUP Standard Transport Tube. *ExistTransport> #ExistPedCollectTransport> Pediatric Collection/Transport: 1 mL platelet-poor plasma, frozen. *ExistPedCollectTransport> #ExistRemarks> Remarks: CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered. *ExistRemarks> #ExistConditions> Unacceptable Conditions: Serum. Nonfrozen or hemolyzed specimens. *ExistConditions> #ExistStability> Stability: Ambient: 4 hours; Refrigerated: 4 hours; Frozen: 2 weeks *ExistStability> |
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| Reference Interval: |
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#ExistRefRange> 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% 1-6 years: 56-150% 7-9 years: 70-138% 10-11 years: 63-137% 12-13 years: 65-130% 14-15 years: 57-125% 16-17 years: 64-160% 18 years and older: 56-153% *ExistRefRange> |
| CPT Code(s): | |
| 85270 |