Device for the quantification of cell and non-cell components (3, 3', 3") in a solution containing a blood sample comprising: - at least one pair of detection electrodes , said at least one pair of detection electrodes comprising at least one first electrode connected with a first input apt to receive a first signal in input (V + ) and a second electrode ; - at least one pair of reference electrodes , said at least one pair of reference electrodes comprising a first electrode connected with a second input configured to receive a second signal in input (V-) of opposite polarity to the first input signal (V + ) and a second electrode connected to the second electrode of said at least one pair of detection electrodes , in a common point wherefrom an output signal (Out) is picked up; said device being characterised in that it comprises: - at least one concentrator (10, 10', 10", 14, 14', 14") in ferromagnetic material, configured to co-operate with a magnetic field external to the device , in such a way as to cause the concentration of said components (3, 3', 3") on said at least one pair of detection electrodes , said at least one pair of detection electrodes (4, 4', 5, 5', 6, 6', 34, (10, 10', 10", 14, 14', 14") 34') being placed in proximity of said at least one concentrator (10, 10', 10", 14, 14', 14") and said one pair of reference electrodes (7, 7', 8, 8', 9, 9', 37, (10, 10', 10", 14, 14', 14") 37'), being placed in areas without said at least one concentrator (10, 10', 10", 14, 14', 14") - a substrate configured for the housing of: said at least one pair of detection electrodes , said at least one pair of reference electrodes and said at least one concentrator (10, 10', 10", 14,14', 14"); - a support configured to receive a sample of blood or of solution containing blood; and - at least one spacer element configured to confine in the plane of the substrate the blood sample and to distance said substrate from said support . - at least one pair of detection electrodes , said at least one pair of detection electrodes comprising at least one first electrode connected with a first input apt to receive a first signal in input (V + ) and a second electrode ; - at least one pair of reference electrodes , said at least one pair of reference electrodes comprising a first electrode connected with a second input configured to receive a second signal in input (V-) of opposite polarity to the first input signal (V + ) and a second electrode connected to the second electrode of said at least one pair of detection electrodes , in a common point wherefrom an output signal (Out) is picked up; - at least one concentrator (10, 10', 10", 14, 14', 14") in ferromagnetic material, configured to co-operate with a magnetic field external to the device , in such a way as to cause the concentration of said components (3, 3', 3") on said at least one pair of detection electrodes , said at least one pair of detection electrodes (4, 4', 5, 5', 6, 6', 34, (10, 10', 10", 14, 14', 14") 34') being placed in proximity of said at least one concentrator (10, 10', 10", 14, 14', 14") and said one pair of reference electrodes (7, 7', 8, 8', 9, 9', 37, (10, 10', 10", 14, 14', 14") 37'), being placed in areas without said at least one concentrator (10, 10', 10", 14, 14', 14") - a substrate configured for the housing of: said at least one pair of detection electrodes , said at least one pair of reference electrodes and said at least one concentrator (10, 10', 10", 14,14', 14"); - a support configured to receive a sample of blood or of solution containing blood; and - at least one spacer element configured to confine in the plane of the substrate the blood sample and to distance said substrate from said support . <EOS>