An automatic analyzer which can reduce the effort necessary for conducting a test of limit of detection/limit of quantification properties and managing the test results is provided. Operation condition-setting means for conducting an evaluation test for at least one of a limit of detection and a limit of quantification for each measurement item, determination condition-setting means for setting a determination condition of the evaluation test, and a calculation unit for obtaining 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 based on the set operation condition, and calculating a test result of the evaluation test from the measurement result of the dilution series based on the set determination condition are disposed.