ARUP's Laboratory Test Directory
| 0030098: Factor VIII Activity, ReFacto |
| Test Mnemonic: F8REFACTO | |
|
Methodology: Clotting
Performed: Mon-Fri Reported: 1-4 days |
| Specimen Required: | |
|
Collect: One 5 mL lt. blue (sodium citrate). (Min: 3 mL) Refer to the Hemostasis/Thrombosis 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. For hemophiliacs: note dose, date, and time of last factor VIII concentrate infusion. Unacceptable Conditions: Serum. Nonfrozen or hemolyzed specimens. Stability: Ambient: 4 hours; Refrigerated: 4 hours; Frozen: 2 weeks |
|
| Reference Interval: |
| No reference interval established for ReFacto Antihemophilic factor. |
| Note: | |
| This test should only be ordered on patients receiving ReFacto Antihemophilic factor. |
| CPT Code(s): | |
| 85240 |