[A comparison of different methods of measuring bleeding time (author's transl)]

Two methods of determining bleeding time (Ivy's and Duke's) were compared using a standardized method. Skin cuts were made with either a disposable scalpel or a precision plunger. Ivy's method gave results which were markedly superior to those with Duke's. It was, furthermore, shown that reproducibility of two successive determinations in the same person largely depended on the experience of the investigator. Best results were obtained using the precision plunger and automatic collection of blood. But even when these were used, there were frequent deviations of more than 20% in duplicate samples.