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Updated: May 24, 2026

Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
Published on: September 9, 2012
Elevated factor VIII: an unfamiliar risk factor for cerebral venous thrombosis
Nicole E Albert1, Andrew Y Hamarich, Ami Joshi
1Department of Internal Medicine, Lankenau Medical Center, 100 E Lancaster Ave, Wynnewood, PA 19096-3415, USA. albertn@mlhs.org
Abstract:
An elevated factor VIII level has been shown to be an independent risk factor for venous thrombosis. However, physicians screen for this factor far less frequently than they screen for other coagulopathies. The causes of increased factor VIII levels are likely a combination of genetic and acquired variables. The authors describe a case of a healthy 48-year-old woman found to have a cerebral venous thrombosis, with her only identifiable risk factor being an elevated factor VIII level.
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