W T Hung et al 1994 Phys. Med. Biol. 39 1855 doi:10.1088/0031-9155/39/11/005
W T Hung, A F Collings and J Low
Show affiliationsPrecise measurements have been made of the rate of sedimentation of whole blood in which the concentrations of red blood cells and the plasma proteins have been systematically varied. The contribution of each factor to the sedimentation process is expressed in terms of three parameters that describe the sedimentation curve: the set-up time, and the slopes of the first and second phases of settling. This analysis affords delineation between the onset and the degree of aggregation of the red blood cells as contributors to the usual ESR value, the height of plasma in a 200 nm blood column after 60 min. In terms of the 60 min ESR value, an increase in the haematocrit or albumin concentration inhibits sedimentation, the latter only slightly, whereas an increase in the concentration of globulin or fibrinogen accelerates sedimentation, with fibrinogen showing the more marked effect.
87.80.-y Biophysical techniques (research methods)
47.63.Jd Microcirculation and flow through tissues
Soft matter, liquids and polymers
Issue 11 (November 1994)
W T Hung et al 1994 Phys. Med. Biol. 39 1855
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