- A dictionary of medical eponyms

Howell-Gram method

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Method of determining the coagulation time of blood: citrate plasma in small vitrios is kept at 37ยบ C in transparent Dewar vessel. To this is added optimal quantities of calcium iones, and the time from the adding to beginning of coagulation is measured. In haemophilia coagulation time determined by this method may be prolonged.

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