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Clinical Chemistry 54: 769, 2008; 10.1373/clinchem.2008.103168
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(Clinical Chemistry. 2008;54:769.)
© 2008 American Association for Clinical Chemistry, Inc.

Clinical Case Study

Commentary

Elizabeth M. Van Cott

Department of Pathology, Massachusetts General Hospital, Boston, MA.

Address correspondence to the author at: Department of Pathology, Massachusetts General Hospital, Boston, MA 02114.

The first 20% of the full text of this article appears below.

This case provides useful information on the laboratory evaluation of a prolonged prothrombin time (PT). The great majority of PT prolongations are due to acquired rather than hereditary causes, but diagnosis of hereditary deficiencies when they are present is important for appropriate patient care. Common acquired causes of PT prolongations include warfarin therapy, vitamin K deficiency, decreased hepatic synthesis of coagulation factors, and disseminated . . . [Full Text of this Article]






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