Method for conducting platelete aggregation analysis by a cartridge device

A method for conducting platelet aggregation analysis by a cartridge device comprising two, three, or four pairs of electrode wires for measuring the electrical impedance between two respective electrodes of each pair of electrode wires, the method comprising the following steps:

• (a) providing a blood sample in a cup portion of the cartridge device;
• (b) stirring said blood sample for circulating said blood sample within said cup portion of the cartridge device;
• (c) providing an electrode holder having incorporated the two, three, or four pairs of electrode wires, wherein sensor portions of the two, three, or four pairs of electrode wires are completely immersed into the blood sample, wherein the two respective electrodes of the two, three, or four pairs of electrode wires are positioned parallel to each other and parallel to the respective electrodes of the other pairs of electrode wires;
• (d) measuring the electrical impedance between the respective electrodes of the at least two, three, or four pairs of electrode wires to obtain measured electrical impedance values;
• (e) comparing the measured electrical impedance values from the two, three, or four pairs of electrode wires immersed in the blood sample to one another;
• (f) discarding and repeating the measurements of the electrical impedance in case a variation of the measurements is outside a predetermined threshold range;
• or
• (g) reporting the measured electrical impedance values from the two, three, or four pairs of electrode wires and/or the mean or median value thereof in case the variation of the measurements is within the predetermined threshold range, wherein the reported measured electrical impedance values indicate platelet aggregation in the blood sample.