FIELD: measuring equipment.SUBSTANCE: invention can be used to determine blood glucose. In one embodiment, a system is provided for measuring the concentration of an analyte, which includes a test strip and an analyte meter. Test strip includes a substrate, a plurality of electrodes connected to respective electrode connectors. Analyte meter includes a housing with a test strip port connector configured to connect to the respective electrode connectors of the test strip, and a microprocessor connected to the test strip port connector. In the measuring device, the microprocessor is designed to: apply a first signal to the plurality of electrodes so that a physical characteristic of a fluid sample is determined; estimate an analyte concentration based on a predetermined sampling time point during a test sequence; apply a second signal to a first electrode and a second electrode of the plurality of electrodes at a specified sampling time point during the test sequence, measure a signal output at a plurality of t
