Rheometry of Blood Suspensions

Blood contains differently deformable blood cells that are embedded in a colloidal solution. Here are some tips on how to measure blood reliably

Blood suspensions are complex, non-Newtonian fluids that exhibit thixotropy and yield point. These characteristics are a consequence of the number (hematocrit: 35-45 %) and the properties of the blood cells (intrinsic: deformability, aggregability; extrinsic: size, shape) and the plasma proteins present (quantity, size, anisotropy, charge), including their interactions with the cellular components in the blood. Unfortunately, the nature of the surface (hydrophilicity, roughness) with which the blood comes into contact also has an influence on the measurement result.

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