Abstract: A microfluidic system includes a microfluidic cartridge and a detector assembly. The microfluidic cartridge includes a first and second side and at least one flow channel and an inlet to flow channel(s) for feeding a liquid sample, the flow channel(s) includes a plurality of first optical detection sites. The detector assembly includes a slot. The detector assembly and the microfluidic cartridge are constructed such that when the microfluidic cartridge is inserted to a first predetermined position into the slot, one of the first optical detection sites of the microfluidic cartridge is positioned in the beam path of the first light source, and when the cartridge is inserted to a second predetermined position into the slot, another one of the first optical detection sites of the microfluidic cartridge is positioned in the beam path of the first light source.

Abstract: A microfluidic assay system including a microfluidic cartridge and an associated microfluidic operator system. The microfluidic cartridge comprises a base part, having a first face with a recess and a foil fixed to the base part for covering the recess and providing a microfluidic cartridge foil face. The base part with the recess and the foil forms a flow channel and a sink in fluid communication with each other. The microfluidic cartridge comprises an inlet opening into the flow channel upstream to the reaction section.

Abstract: A method and a system for quantitative or qualitative determination of a target component in a liquid sample. The method includes i) providing a plurality of magnetic particles including capture sites for the target component on their respective surfaces; ii) providing a plurality of fluorophores configured to bind to the capture sites of the magnetic particles; iii) bringing the liquid sample into contact with the fluorophores and the magnetic particles in a flow channel of a micro fluidic device including a transparent window; and iv) at least temporally immobilizing the magnetic particles adjacent to the transparent window using a magnet, emitting exciting electromagnetic beam towards the immobilized magnetic particles, reading signals emitted from fluorophores and performing a quantitative or qualitative determination of the target component based on the read signal. A suitable micro fluidic device for use in the method/system and a kit for preparing a liquid sample.

Abstract: A method and a system for quantitative or qualitative determination of a target component in a liquid sample includes i) providing a plurality of magnetic particles including one or more capture sites for the target component on their respective surfaces; ii) providing a plurality of fluorophores configured to bind to the capture sites of the magnetic particles; iii) bringing the liquid sample into contact with the fluorophores and the magnetic particles in a flow channel of a micro fluidic device including a transparent window; and iv) at least temporally immobilizing the magnetic particles adjacent to the transparent window using a magnet, emitting exciting electromagnetic beam towards the immobilized magnetic particles, reading signals emitted from fluorophores captured by the immobilized magnetic particles and performing a quantitative or qualitative determination of the target component based on the read signal.