A method of determining an analyte concentration from a fluid sample with a test strip from a batch of test strips, the test strip having at least two electrodes and a reagent disposed on at least one of the electrodes, the method comprising: depositing a fluid sample on at least one electrode to start an analyte test sequence; applying a signal to the sample to determine a physical characteristic of the sample; driving another signal to the sample to cause a physical transfonnation of the sample; measuring at least one output signal from the sample; obtaining an estimated analyte concentration from the at least one output signal at one of a plurality of predetennined time positions from the start of the test sequence and at least one predetermined parameter of the test strip; generating a first parametric factor of the test strip based on the physical characteristic of the sample; calculating a first analyte concentration based on the first parametric factor and predetermined parameter of the test strip and at least one output signal measured at one of the plurality of predetermined time positions from the start of the test sequence; generating a second parametric factor of the test strip based on the estimated analyte concentration and the physical characteristic of the sample; calculating a second analyte concentration based on the second parametric factor and predetermined parameter of the test strip and at least one output signal measured at one of the plurality of predetermined time positions from the start of the test sequence; generating a third parametric factor of the test strip based on the first analyte concentration and the physical characteristic; calculating a third analyte concentration based on the third parametric factor and predetermined parameter of the test strip and at least one output signal measured at one of the plurality of predetermined time positions from the start of the test sequence; and annunciating at least one of the first, second, and third analyte concentrations, wherein the predetermined parameter of the test strip is a batch slope defined as the measured or derived gradient of the line of best fit for measured glucose concentration against actual glucose concentration for the batch of test strips, wherein the physical characteristic comprises an impedance characteristic representative of hematocrit of the sample and the analyte is glucose, and wherein the first, second and third parametric factors are each a multiplication factor of the predetermined parameter. depositing a fluid sample on at least one electrode to start an analyte test sequence; applying a signal to the sample to determine a physical characteristic of the sample; driving another signal to the sample to cause a physical transfonnation of the sample; measuring at least one output signal from the sample; obtaining an estimated analyte concentration from the at least one output signal at one of a plurality of predetennined time positions from the start of the test sequence and at least one predetermined parameter of the test strip; generating a first parametric factor of the test strip based on the physical characteristic of the sample; calculating a first analyte concentration based on the first parametric factor and predetermined parameter of the test strip and at least one output signal measured at one of the plurality of predetermined time positions from the start of the test sequence; generating a second parametric factor of the test strip based on the estimated analyte concentration and the physical characteristic of the sample; calculating a second analyte concentration based on the second parametric factor and predetermined parameter of the test strip and at least one output signal measured at one of the plurality of predetermined time positions from the start of the test sequence; generating a third parametric factor of the test strip based on the first analyte concentration and the physical characteristic; calculating a third analyte concentration based on the third parametric factor and predetermined parameter of the test strip and at least one output signal measured at one of the plurality of predetermined time positions from the start of the test sequence; and annunciating at least one of the first, second, and third analyte concentrations, wherein the predetermined parameter of the test strip is a batch slope defined as the measured or derived gradient of the line of best fit for measured glucose concentration against actual glucose concentration for the batch of test strips, wherein the physical characteristic comprises an impedance characteristic representative of hematocrit of the sample and the analyte is glucose, and wherein the first, second and third parametric factors are each a multiplication factor of the predetermined parameter.