Lee-White method [Roger I. Lee, American physician, b. 1881; Paul D. White, American physician, 1886–1973; Gk, meta, beyond, hodos, way] , a method of determining the length of time required for a clot to form in a test tube of venous blood. It is not specific for any coagulation disorder but is often used to monitor coagulation during heparin therapy. Because normal values and precise methodology vary, instructions are provided by most laboratories. See also clotting time.
