Factor VIII Assay (FACT VIII)
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| Synonyms:
| Factor VIII Activity, FVIII, Antihemophilia factor, AHF |
| Specimen: | Blood; (1) Blue (3.2% sodium citrate) top vacutainer tube.
Patient should avoid coumadin therapy for 2 weeks and heparin therapy for 2 days prior to testing. |
| Volume: | Full primary tube |
| Minimum Volume: | Full primary tube |
| Collection: | Specimen should be analyzed as soon as possible after collection. Remove plasma from cells and transfer to a plastic aliquot tube for transport.
Store plasma at room temperature for 4 hours; freeze at -20°C for 15 days or
-80°C for one month.
Do Not refrigerate plasma. |
| Rejection Criteria: | Clotted; short filled tubes; hemolysis; refrigerated specimens; improper labeling. |
| Reference Range: | 60 - 145% activity |
| Methodology: | |
| Test Use: | Evaluation of clotting disorders due to Factor VIII deficiency. |
| Additional Information: | Factor VIII deficiency (Hemophilia A) is the most common of the hereditary bleeding disorders |
| Testing Includes: | |
| Testing Facility: | AnMed Laboratory |