Abstract:We show that the characteristic time for sickled blood to traverse 100 µm-diameter glass capillaries can be used as the foundation for a useful point-of-care diagnosis for sickle cell disease. 3.2 cm long capillaries were inserted into a 5 µL drop of blood, and 1/4 µL was spontaneously drawn into the tube. The rate at which the blood traversed the capillary was significantly changed by deoxygenation only for sickle genotypes, a consequence of the increased viscosity of cells containing sickle fibers. Under the… Show more
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