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| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Coagulation Factor XI Activity Assay
Test CodeF11
Alias/See Also
Factor XI
Preferred Specimen
1 mL platelet poor sodium citrate plasma
Minimum Volume
0.5 mL
Instructions
Submission of platelet poor plasma is critical to accurate results. Contact laboratory for further information.
Transport Container
Plastic vial
Transport Temperature
Frozen
Specimen Stability
Frozen 14 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis, gross lipemia, gross icterus
Report Available
2-4 days
Reference Range
Adults: 55-150%
Clinical Significance
Factor XI deficiency may cause prolonged partial thromboplastin time. Deficiency associated with mild bleeding diathesis, but there is poor correlation between activity level and clinical bleeding. A relatively high incidence of congenital deficiency occurs among Ashkenazi Jewish descent (hemophilia C).
