The Inadequacies of Routine Bleeding and Clotting Times

Abstract
A ROUTINE laboratory test once well established is often slavishly adhered to, with little further thought about how it originated, why it is done or what it means. To justify it, the phrases "for the record" and "for protection" are often heard. Tests done only for these reasons not only are generally a waste of time and money but also can be quite misleading, and may give to the physician a false sense of security, or produce worry and concern over potentially serious disease when no disease actually exists. To be worth while, routine tests should give a maximum of . . .

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