Abstract: The invention relates to a a microtiter plate and its use in a method of the invention, which microtiter plate comprises a plurality of containers, wherein the bottom of each container comprises a (semi-)permeable membrane capable of directly or indirectly binding an analyte, and wherein each container is separated from an adjacent container by a container dividing wall, wherein the containers are grouped in one or more clusters, each cluster comprising at least two containers, wherein said clusters are separated from adjacent clusters by a cluster dividing wall and wherein at least part of the container dividing wall is lower than the cluster dividing wall or wherein the container dividing wall contains at least one passageway connecting at least two adjacent containers within a cluster, said passageway being at a distance from the bottom of the container and at least partly below the top of the container.

Abstract: The invention is in the field of biomedical testing and relates to a device for detecting the presence of chemical and/or biological substances in a sample comprising a reagent compartment (1) which is contained in a cylindrical housing (2), which cylindrical housing (2) comprises at least a first open end; and a sample receiver (8) which is also contained in said cylindrical housing (2); and an operating means (4) capable of moving said reagent compartment (1) and/or said sample receiver (3); and wherein the reagent compartment (1) and the sample receiver (3) can be in at least two positions relative to each other, said positions comprising a first position wherein the sample receiver (3) is not in analyte-exchangeable contact with the reagent compartment (1), and a second position wherein the sample receiver (3) is in analyte-exchangeable contact with the reagent compartment (1).

Abstract: The present invention describes a test device which comprises a test strip and a sample receiving means having a predetermined volume. In a preferred test device two more test strips are present which are positioned parallel to each other.