Calibration curve generating method and automatic analyzing apparatus

An automatic analyzing apparatus comprising:

• a dispensing unit configured to dispense a reagent to each of a plurality of standard samples each containing a detection target in a known concentration, the reagent comprising an insoluble carrier to which an ingredient to be bonded to the detection target is attached;
• a photometry unit configured to obtain photometric intensities for the standard samples by optically measuring each of reaction liquids of the respective standard samples dispensed with the reagent;
• a memory configured to store (a) information for different photometry timings for the standard samples of different detection target concentrations and (b) a photometry timing line indicative of different time points to obtain information for the obtained photometric intensities for the respective standard samples of different detection target concentrations;
• and
• processing circuitry configured to generate, based on photometry results obtained at the photometry timings, calibration data indicative of a correlation between a reaction time and a concentration, wherein:
• the photometry timings are gradually delayed as a photometry object turns from a higher concentration sample of the standard samples to a lower concentration sample of the standard samples, and
• the processing circuitry is configured to acquire intensity curves based on the obtained photometric intensities and adopt intersections between the intensity curves and the photometry timing line as the photometry timings, the intensity curves each representing a time course of the photometric intensities for the corresponding one of the standard samples wherein the photometry timing line is set by a regression analysis based on the intensity curves.