Maybe you are thinking about another correlation with platelets? In a complete linear regression model, platelets will come out as a minor contributor to WBV when you look at effect strength. By far, the major contributor to whole blood viscosity is Hb/Hct, besides the effect of plasma viscosity.
[URL unfurl="true"]https://pdfs.semanticscholar.org/3759/b3fe0e486e5504446cb3d338360f597ab8f5.pdf[/URL]
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Note on these plots the platelet count is transformed to log scale:
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[URL unfurl="true"]https://www.researchgate.net/profile/Mohamed_Elblbesy/publication/294734038_Computation_of_the_Coefficients_of_the_Power_law_model_for_Whole_Blood_and_Their_Correlation_with_Blood_Parameters/links/56eabf9d08ae785865800597/Computation-of-the-Coefficients-of-the-Power-law-model-for-Whole-Blood-and-Their-Correlation-with-Blood-Parameters.pdf[/URL]
A key feature of our study is to examine the correlations between m and n with the blood parameters that are mainly related to erythrocytes (such as HCT %, Hb, RBC, MCV, and MCHC) because erythrocytes play a major role in the non-Newtonian behavior of blood. The values of n and mobtained from our study are in a good agreement with previous studies. The correlations between n and both RBC and MCV were strong (Figure 3), in accordance with the dramatic dependence of the number and size of erythrocytes on the flow behavior of the whole blood. The correlations between n and other blood indices were moderate to weak (Figure 3) because the other blood parameters have stronger effects on the physiological and biochemical properties of whole blood than the macro-rheological behavior of whole blood. RBC and their related indices are well known to affect viscosity (Chao-Hung, 2004). Chao-Hung found strong positive correlations between whole blood viscosity and the RBC count, Hb, and HCT. David M. et al. found that the blood viscosity increased with increasing hematocrit (David et al., 2000). M, which depends on the physiological parameters of blood, was strongly correlated to the blood indices considered in this study (Figure 4). HCT and Hg increase blood viscosity under different values of shears rates. This linear logarithmic relationship between viscosity and the shear rates corresponds to lines with higher slopes and increasing intercepts of the line, with the y-axis representing the shear rates. This leads to an increase of the value of blood indices with increasing m. From the dependence of m on the internal structure of the liquid under investigation, our results showed strong positive correlations with all of the blood indices.
