INTEGRATED SEPARATION AND DETECTION CARTRIDGE WITH MEANS AND METHOD FOR INCREASING SIGNAL TO NOISE RATIO

The present invention relates to a device and a method for quantitative detecting of the presence or absence of a target analyte in a liquid sample having a volume of less than 200 μl, the device comprising a reaction chamber in the form of a capillary channel, a first part comprising a sample inlet for the introduction of a sample containing an analyte, and a discharge outlet for the discharge of waste products; a second part comprising means for detection of the target analyte, and a solution inlet for introduction of washing solutions and reaction mixtures; and means for transferring an immobilized analyte from the first part to the second part of the chamber and vice versa, where the first and second parts are separated such that other liquid sample material may not enter the second part of the chamber and such that light may not be transferred from the first part of the chamber to the detector part of the second part of the chamber.