herewith disclosed is a sample analyzer comprising : a measurement section configured to perform a measurement on a sample and generate a measurement value according to the concentration of an analyte in the sample ; a memory storing a calibration curve ; an analysis section ; an output section ; and an instruction receiver . when the instruction receiver receives an instruction to perform a diluting measurement on a calibration sample , the measurement section dilutes the calibration sample by a predetermined ratio and performs a measurement on the diluted calibration sample , and the analysis section determines the concentration of the analyte in the diluted calibration sample by applying a measurement value obtained from the diluted calibration sample to the calibration curve . information generated based on the determined concentration and the known concentration is output .