An immediate acid change in shed blood

Abstract
The authors report an increase in the hydrogen ion concentration of shed blood, of the mean value of 0.05. The change occurs within 6 min. at 38 degrees, and 11 min. at 28 degrees. At room temperature it does not occur until after 1.5 to 2 hrs. The change is not associated with coagulation; and it is not affected by substances which inhibit oxidation, enzyme action or glycolysis. It takes place in laked blood, and in the absence of leucocytes, but not in plasma.

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