We here offer mathematical models derived for each species using a multi linear regression approach to describe the influence of shear rate, hematocrit, and temperature on blood viscosity. In order to optimize experiments that require animal blood, we need models to adapt the blood samples. This results in the speciesāspecific shear thinning behavior of blood suspensions, and it is therefore not enough to adjust the hematocrit of an animal blood sample to mimic the behavior of human blood over the entire range of shear rates that are present in the body. However, animal blood can never exactly mimic human blood due to erythrocyte properties differing among species. Blood viscosity is important in these settings as it determines the driving pressure through biomedical devices and the shape of the bloodstain. Animal blood is used in mock circulations or in forensic bloodstain pattern analysis.
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