Abstract
SummaryBleeding time, clotting time and capillary resistance test have been studied in 100 normal people.1° As far as our Belgian people are concerned and with the technical conditions described, positivity of the capillary resistance test has to be considered far above the values generally admitted as normal : 45 % of normal subjects have more than 10 petechial spots, 8 % of them more than 80. Differences in the size of the spots are more significative than differences in number.2° Results obtained in the determination of bleeding time are in the limits generally considered as normal (96 % of the results are between 1 and 3 minutes).3° Clotting time is appreciated by the moment at which the first fine thread of fibrin appears on a paraffined slide in the first drop of blood collected from the finger. If temperature is maintained between 18° and 20° this time does not exceed 16 minutes; in the second or third drop of blood this time is 14 minutes. On non paraffined slides these limits are reduced to 13 mi...
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