Automatic analyzer

An automatic analyzer for analyzing a sample by dispensing the sample and a reagent into a reaction container and using a reaction liquid combined in the reaction container, the automatic analyzer comprising:

• a reaction table for retaining a plurality of the reaction containers along the circumference, capable of rotating along the circumference;
• a photometry section for measuring absorbance of the reaction liquid in the reaction container a plurality of times at any one time the reaction container passes through a predetermined area with the rotation of the reaction table, which is performed every time the reaction container passes through the predetermined area;
• a standard deviation calculating section for calculating the standard deviation of a plurality of absorbances of the reaction liquid measured by the photometry section at any one time the reaction container passes through the predetermined area, which is performed every time the reaction container passes through the predetermined area;
• a standard deviation judging section for judging as to whether or not each of a plurality of the standard deviations calculated by the standard deviation calculating section is smaller than the threshold set based on the standard deviation of a plurality of absorbances in a homogeneously-stirred reaction liquid;
• an average value calculating section for calculating an average value for the plurality of absorbances for the reaction liquid having a standard deviation judged to be smaller than the threshold by the standard deviation judging section;
• and
• an absorbance determining section for determining any one of a plurality of average values calculated by the average value calculating section to be absorbance for performing a sample analysis.