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Bleeding and Clotting Disorders

Vitamin K deficient & Willebrand disease



how do they phiscally test to see if your blood coagulates fast enough before surgery?


Normally blood is taken from patient and placed in tubes with different substances. The time it takes to clot is measured and compared to standards. This will pick up major disturbances of the clotting system, but not all.

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Response by:

Eric H Kraut, MD Eric H Kraut, MD
Professor of Hematology
College of Medicine
The Ohio State University