The response of normal human platelets to treatment with bovine lung heparin was evaluated
using electronic particle size analysis and aggregometry. Samples for electronic particle
size analysis were obtained both before and after the addition of heparin to platelet-rich
plasma (PRP). The number of single platelets decreased significantly after the addition
of heparin to PRP obtained from 22 individuals. This decrease averaged 18% in 19 samples
which did not show a significant increase in transmittance and was at least 70% in
3 samples which showed a significant increase in transmittance. The size distribution
of single platelets was not significantly altered. In addition, electron microscopic
examination revealed that platelets treated with heparin are activated.
Key words
Heparin - Platelet aggregation - Electronic particle size analysis