Аннотация:The process of reversible spontaneous aggregation of red blood cells (RBC), as well as the process of their shear stress induced disaggregation, both affect hemorheology and blood microcirculation in the human body. The aim of this work is to estimate the influence of temperature on the aggregation properties of RBC suspended in PBS dextran solutions in vitro. Laser method based on diffuse light scattering was used to estimate the RBC aggregation properties. The results demonstrate a clear dependence of the critical shear stress aggregation parameter of RBC in PBS dextran solutions on temperature. These results would help to better understand the process of RBC aggregation.