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 microfluidic device comprising at least one test channel, which test channel comprises an upper test channel section with an upstream end and a sampling region at its upstream end and at least one reference channel, which reference channel comprises an upper reference channel section with an upstream end and a sampling region at its upstream end. The test channel and the reference channel comprise a merging region downstream to the upper test channel section and a common downstream channel section. The merging region and the common downstream channel section are arranged such that a reference liquid flowing from the upper reference channel section into the merging region will block a test liquid flow in the upper test channel section when the test liquid flow has not yet reached the merging section. The microfluid device may be used for detecting change of flow properties e.g. due to agglomeration, agglutination or viscosity change in a liquid preferably selected from water, urine, blood, or blood plasma.

Abstract: The invention relates to a flow through system for quantifying a target component in a liquid. The flow through system comprises a flow-through device comprising a flow path comprising a marker section, a capture section downstream to said marker section, and at least two quantification sections. The marker section comprises a non-immobilized marker. The capture section comprises a capture zone with an immobilized capture agent, and the at least two quantification sections comprise a pre-capture quantification section placed downstream to the marker section and up stream to the capture section, and a post-capture quantification section placed downstream to the capture section. The system further comprises a quantification unit for each of said quantification sections. The quantification unit(s) being arranged to quantify marker containing components and/or particles passing through said respective quantification sections.

Abstract: A microfluidic device comprising a flow channel with an inlet and a gas escape opening is described. The flow channel comprises a liquid flow channel section and a flow controlling section downstream to the liquid flow channel section and upstream to or coinciding with the gas escape opening. The flow controlling section provides a flow resistance to gas, which is sufficiently high to reduce velocity of a capillary flow of a liquid in the liquid flow channel section. The microfluidic device with the flow controlling section provides a device in which the velocity of the flow can be reduced to a desired level. Also is described a method of performing a test using the microfluidic device.

Abstract: A microfluidic device comprising at least one test channel, which test channel comprises an upper test channel section with an upstream end and a sampling region at its upstream end and at least one reference channel, which reference channel comprises an upper reference channel section with an upstream end and a sampling region at its upstream end. The test channel and the reference channel comprise a merging region downstream to the upper test channel section and a common downstream channel section. The merging region and the common downstream channel section are arranged such that a reference liquid flowing from the upper reference channel section into the merging region will block a test liquid flow in the upper test channel section when the test liquid flow has not yet reached the merging section. The microfluid device may be used for detecting change of flow properties e.g. due to agglomeration, agglutination or viscosity change in a liquid preferably selected from water, urine, blood, or blood plasma.