Abstract: A microdevice for separating plasma from human blood comprising a blood flow channel (2) connected to a corpuscles flow channel (5) and a plasma flow channel (8) through a curved construction channel (15). Blood flow channel has width 150 to 400 ?m and length 1-20mm, constriction channel (15) has width 60 to 200 ?m, length 0.157 to 3.15mm and curvature angle 90-270° with inner radius 50 ?m to 1mm and outer radius 110 ?m to 1.2 mm and corpuscles flow channel (5) has width 200 to 700 ?m, length 0.5 to 5mm and bend angle 40-70°. Plasma channel is sinewave shaped and has width 20-150 ?m and length 10-50mm. Channels have uniform depth 20-120 ?m (FIG. 1).

Abstract: A microdevice for separating plasma from human blood comprising a blood flow channel (2) connected to a corpuscles flow channel (5) and a plasma flow channel (8) through a curved construction channel (15). Blood flow channel has width 150 to 400 ?m and length 1-20 mm, constriction channel (15) has width 60 to 200 ?m, length 0.157 to 3.15 mm and curvature angle 90-270° with inner radius 50 ?m to 1 mm and outer radius 110 ?m to 1.2 mm and corpuscles flow channel (5) has width 200 to 700 ?m, length 0.5 to 5 mm and bend angle 40-70°. Plasma channel is sinewave shaped and has width 20-150 ?m and length 10-50 mm. Channels have uniform depth 20-120 ?m (FIG. 1).