An automatic analyzer having: a sample-dispensing mechanism for dispensing a sample to a reaction container; a reagent-dispensing mechanism for dispensing a reagent to the reaction container; and a measurement unit (29, 30) for optically measuring a mixture of the sample and the reagent; characterized in that the automatic analyzer further has: operation condition-setting means for setting an operation condition for conducting an evaluation test for evaluating at least one of a limit of detection and a limit of quantification for each substance to be measured in the sample; determination condition-setting means for setting a determination condition of the evaluation test; and a calculation unit configured to: obtain a measurement result of a dilution series containing different dilution concentrations by controlling the sample-dispensing mechanism, the reagent-dispensing mechanism and the measurement unit (29, 30) based on the set operation condition, and calculate a test result of the evaluation test of the at least one of the limit of detection and the limit of quantification from the measurement result of the dilution series based on the set determination condition. a sample-dispensing mechanism for dispensing a sample to a reaction container; a reagent-dispensing mechanism for dispensing a reagent to the reaction container; and a measurement unit (29, 30) for optically measuring a mixture of the sample and the reagent; characterized in that the automatic analyzer further has: operation condition-setting means for setting an operation condition for conducting an evaluation test for evaluating at least one of a limit of detection and a limit of quantification for each substance to be measured in the sample; determination condition-setting means for setting a determination condition of the evaluation test; and a calculation unit configured to: obtain a measurement result of a dilution series containing different dilution concentrations by controlling the sample-dispensing mechanism, the reagent-dispensing mechanism and the measurement unit (29, 30) based on the set operation condition, and calculate a test result of the evaluation test of the at least one of the limit of detection and the limit of quantification from the measurement result of the dilution series based on the set determination condition. operation condition-setting means for setting an operation condition for conducting an evaluation test for evaluating at least one of a limit of detection and a limit of quantification for each substance to be measured in the sample; determination condition-setting means for setting a determination condition of the evaluation test; and a calculation unit configured to: obtain a measurement result of a dilution series containing different dilution concentrations by controlling the sample-dispensing mechanism, the reagent-dispensing mechanism and the measurement unit (29, 30) based on the set operation condition, and calculate a test result of the evaluation test of the at least one of the limit of detection and the limit of quantification from the measurement result of the dilution series based on the set determination condition. obtain a measurement result of a dilution series containing different dilution concentrations by controlling the sample-dispensing mechanism, the reagent-dispensing mechanism and the measurement unit (29, 30) based on the set operation condition, and calculate a test result of the evaluation test of the at least one of the limit of detection and the limit of quantification from the measurement result of the dilution series based on the set determination condition.