Abstract:
Method and apparatus are described that permit an analyte concentration to be estimated from a measurement in the presence of compounds that interfere with the measurement The method reduces the error in the analyte concentration in the presence of interferents The method includes the use of a set of measurements obtained for a large population having a range of known analyte and interfering compound concentrations From a sample measurement, which may or may not be one of the population, interferents likely to be present are identified, and a calibration coefficient is calculated The calibration coefficient may be applied to the measurement to estimate the analyte concentration In some implementations, the calibration coefficient may be determined as a weighted average of single interferent calibration coefficients In some embodiments, the sample measurement includes a spectroscopic measurement.