Clotting Time of Common Carp Blood

Abstract

Recalcification time, prothrombin time (PT), partial thromboplastin time (PTT) and activated partial thromboplastin time (APTT) were determined for common carp plasma. Clotting times were 37.6±8/7 s (mean±SD) recalcification time, 23.5±3.4 s PT, 17.9±3.2 s PTT, and 5.1 ±0.7 s APTT, respectively. The difference between APTT and PTT suggests that the intrinsic hemostatic system is developed in carp blood. Citrated plasma lost its clotting activity within 12 h during incubation at 37°C, whereas clotting activity was maintained for long hours at 25°C. The shortest clotting time was obtained for the mixture of BaSO4 adsorbed plasma and serum. This indicates that coagulation factors of carp blood can be classified into the serum factors and barium sulphate adsorbed factors. © 1986, The Japanese Society of Fisheries Science. All rights reserved.