Patent ID: 6319719
Filing Date: 2001-11-20
Classification: B01L,G01N,Y10T

Abstract:
An apparatus for separating hematocrit from a whole blood sample having a selected total volume, the sample including a partial volume of blood plasma and a partial volume of hematocrit, the apparatus comprising:a body having an inlet port for receiving a whole blood sample, a reaction region spaced from the inlet port, and at least one capillary pathway having an inlet end coupled to the inlet port and an outlet end coupled to the reaction region, each capillary pathway being dimensioned sufficiently small to assure transport of a portion of the blood sample from the inlet end to the outlet end by capillary pressure, each capillary pathway including a plurality of obstructions, the obstructions having a concave portion facing toward the outlet end of the pathway for separating hematocrit from the portion of the blood sample transported through the capillary pathway to deliver a reaction volume of plasma to the reaction region.