A device (1, 1', 1") for collecting and/or handling a liquid sample and for separating said liquid sample into different components having different densities, said device comprising: - a tubular container (2, 2', 2") having two opposite ends (3, 3', 3") and being adapted to receive a liquid sample, wherein said two ends are configured such that said two ends are open when the sample is collected, and one end (3.2, 3.2', 3.2.1', 3.2") is closed and the other end (3.1, 3.1', 3.1.1', 3.1") remains open when a separation process for separating said liquid sample into different components by centrifugal force takes place, wherein said end that remains open when a separation process for separating said liquid sample into different components by centrifugal force takes place, is a permanently open end, - a valve (4, 4.1', 4", 4.1") located in said tubular container and being actuated by centrifugal force, - a compartment (5, 5', 5a", 5b") located in and forming part of said tubular container which compartment is configured such that it receives a component of said liquid sample and becomes closed (5, 5', 5b") by said valve when a defined centrifugal force is exerted upon said tubular container, thereby separating said component within said compartment (5, 5', 5b") from other component(s) of said liquid sample outside said closed compartment, - an interface (6, 6', 6") to a dispensing and/or aspirating device (8, 8', 8"), said interface being configured to establish a connection between said tubular container and said dispensing and/or aspirating device, such that when such connection is established, said dispensing and/or aspirating device may dispense liquid(s) from said tubular container, e. g. said other component(s) of said liquid sample outside said compartment, or said dispensing and/or aspirating device may aspirate liquid(s) into said tubular container, e. g. liquids for further processing said liquid sample. - a tubular container (2, 2', 2") having two opposite ends (3, 3', 3") and being adapted to receive a liquid sample, wherein said two ends are configured such that said two ends are open when the sample is collected, and one end (3.2, 3.2', 3.2.1', 3.2") is closed and the other end (3.1, 3.1', 3.1.1', 3.1") remains open when a separation process for separating said liquid sample into different components by centrifugal force takes place, wherein said end that remains open when a separation process for separating said liquid sample into different components by centrifugal force takes place, is a permanently open end, - a valve (4, 4.1', 4", 4.1") located in said tubular container and being actuated by centrifugal force, - a compartment (5, 5', 5a", 5b") located in and forming part of said tubular container which compartment is configured such that it receives a component of said liquid sample and becomes closed (5, 5', 5b") by said valve when a defined centrifugal force is exerted upon said tubular container, thereby separating said component within said compartment (5, 5', 5b") from other component(s) of said liquid sample outside said closed compartment, - an interface (6, 6', 6") to a dispensing and/or aspirating device (8, 8', 8"), said interface being configured to establish a connection between said tubular container and said dispensing and/or aspirating device, such that when such connection is established, said dispensing and/or aspirating device may dispense liquid(s) from said tubular container, e. g. said other component(s) of said liquid sample outside said compartment, or said dispensing and/or aspirating device may aspirate liquid(s) into said tubular container, e. g. liquids for further processing said liquid sample.