  We present the validation of a recent fractional mathematical model for
erythrocyte sedimentation proposed by Sharma et al. \cite{GMR}. The model uses
a Caputo fractional derivative to build a time fractional diffusion equation
suitable to predict blood sedimentation rates. This validation was carried out
by means of erythrocyte sedimentation tests in laboratory. Data on
sedimentation rates (percentages) were analyzed and compared with the
analytical solution of the time fractional diffusion equation. The behavior of
the analytical solution related to each blood sample sedimentation data was
described and analyzed.
