ARUP's Laboratory Test Directory
| 0030090: Factor VIII Carrier Panel |
| Test Mnemonic: F8 CARRIER | |
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Methodology: Clotting/Microlatex Particle-Mediated Immunoassay
Performed: Mon, Wed, Fri Reported: 1-4 days |
| Specimen Required: | |
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Collect: Two 5 mL lt. blue (sodium citrate). (Min: Two 3 mL) Refer to the Hemostasis/Thrombosis Specimen section in the front of this User's Guide for special collection instructions.
Transport: 4 mL platelet-poor plasma, frozen. (Min: 2 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 2 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: | ||||||||||||
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| Interpretive Data: | |
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A ratio of less than 0.65 detects a carrier state with 97% accuracy. A ratio of greater than 0.65 is normal, with 88% accuracy. Patient risks should be calculated by a clinical geneticist, using laboratory results and family history.
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| CPT Code(s): | |
| 85240 F8; 85246 vWF/Ag |