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Clinical Chemistry 11: 17-22, 1965;
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Clinical Chemistry, Vol 11, 17-22, Copyright © 1965 by the American Association for Clinical Chemistry

Evaluation of a Photoelectric Clot Timer for the Performance of Prothrombin Times

Seymour Winsten 1

1 Department of Laboratories, Albert Einstein Medical Center, York and Tabor Roads, Philadelphia, Pa. 19141.

This report consists of an evaluation of a commercially available photoelectric clot timer which can be used for performing prothrombin times. In the last two years, approximately 40,000 determinations have been satisfactorily performed with this apparatus. In addition, with the use of the timer, we have been able to pick up unsuspected fibrinogen deficiencies during the course of the performance of routine prothrombin times.

Submitted on October 29, 1963
Accepted on June 16, 1964







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Copyright © 1965 by the American Association for Clinical Chemistry.