Abstract: With the present inventive concept there is provided a system comprising: a test card receiver configured to receive a test card, wherein the test card comprises a sample portion having a first side and a second side opposite the first side, wherein the sample portion of the test card is configured to hold a sample for PCR; a temperature adjuster configured to adjust a temperature of the sample portion of the test card over a plurality of temperature cycles, wherein each temperature cycle is between a first temperature and a second temperature different than the first temperature, wherein the temperature adjuster comprises a surface configured to be in contact with the first side of the sample portion of the test card; wherein the test card receiver comprises a spring member configured to push the sample portion of the test card towards the surface of the temperature adjuster; and a monitoring arrangement configured to monitor the sample portion of the test card over the plurality of temperature cycles, the m