Abstract: Device for aliquoting and filtering blood, comprising: an element (1, 10) for collecting blood (S); a capillary conduit (2) which has a capillary force greater than that of said collecting element and is in fluid communication therewith; and a dispensing element (3) which has a capillary force greater than that of the capillary conduit and is in fluid communication therewith; characterized in that said dispensing element comprises a filtering device (3) for separating blood cells from plasma.

Abstract: According to a blood plasma collection tool of the present invention, a phenomenon that blood cells in blood spontaneously precipitate due to an effect of gravitational force takes place in the very narrow microspace (separation part) having the very narrow depth in the direction of gravitational force of not greater than 1 mm, and the overflow channel functions as a dam against the separation part so that the blood plasma separated out as supernatant fluid can overflow beyond the overflow channel, whereby the blood cells separated out can be prevented from entering the collection part. Therefore, blood plasma can be collected by accurately and readily separating blood plasma and blood cells in a small amount of blood from each other in a short time, using a small tool having a simple structure.

Abstract: A fluidic device containing a flow through chamber comprising an inlet port, an outlet port, and a fluid permeable, compressible matrix located in the chamber between said inlet port and said outlet port, and said compressible matrix having a higher flow resistance at higher compressions and a plurality of flow paths leading from said inlet port to said outlet port through said matrix comprising shorter and longer length flow paths, wherein said matrix is compressed in at least one dimension, being more strongly compressed along the shorter length flow paths than along the longer length flow path.