An automatic analyzer comprising a single conveyer, sample cups and reaction cups, which analyzer is adapted to determine a specific component in a sample while intermixedly conveying by the single conveyer sample-containing sample cups (3*) presenting sample identification information which identifies the sample in the sample cups, and reaction cups containing a reagent for determination of the specific component in the sample, said reaction cups presenting specific component information which identifies the specific component wherein the automatic analyzer comprises: 1) a storage means (2*) adapted to store test order information including specific component information to identify at least one specific component to be measured for each sample, 2) a first identification means (5*) adapted to read the sample identification information presented by each sample cup, 3) a work list preparing means (6*) adapted to select the specific component information which identifies at least one specific component in the sample to be measured from the test order information stored in the storage means on the basis of the sample identification information for the sample read by the first identification means and to prepare a work list consisting of the sample identification information for sample and the specific component information identifying the specific component(s) in the sample to be measured, 4) a loading order determination means adapted to determine the order in which sample cups and reaction cups are to be loaded on the single conveyer from the work list, 5) an output device (13*) adapted to output the loading order, 6) a second identification means (8*) adapted to automatically read the specific component information presented by the reaction cups conveyed by the conveyer, and 7) a collating means (12*) adapted to compare the specific component information read by the second identification means with the determined order and to indicate whether or not they are matched. 1) a storage means (2*) adapted to store test order information including specific component information to identify at least one specific component to be measured for each sample, 2) a first identification means (5*) adapted to read the sample identification information presented by each sample cup, 3) a work list preparing means (6*) adapted to select the specific component information which identifies at least one specific component in the sample to be measured from the test order information stored in the storage means on the basis of the sample identification information for the sample read by the first identification means and to prepare a work list consisting of the sample identification information for sample and the specific component information identifying the specific component(s) in the sample to be measured, 4) a loading order determination means adapted to determine the order in which sample cups and reaction cups are to be loaded on the single conveyer from the work list, 5) an output device (13*) adapted to output the loading order, 6) a second identification means (8*) adapted to automatically read the specific component information presented by the reaction cups conveyed by the conveyer, and 7) a collating means (12*) adapted to compare the specific component information read by the second identification means with the determined order and to indicate whether or not they are matched.