Method of controlling automatic analyzer

A method of controlling an automatic analyzer comprising:

• searching whether or not there exists a substitute stream that can be substituted, in a case where an abnormality of a stream is detected after setting an analysis schedule;
• and
• modifying the analysis schedule, if a substitute stream exists, so that a sample scheduled to be introduced into the stream which has been detected to have the abnormality is introduced into the substitute stream, and treatment timings of the sample which has passed through the substitute stream and the sample which has passed through another normal stream in the detector do not overlap with each other,
• wherein the automatic analyzer includes:
• a pretreatment unit that purifies a sample by pretreating a specimen;
• a separation unit that separates the sample by a liquid chromatograph having multiple streams;
• and
• a detector that detects a separated sample,
• wherein a treatment timing of the sample in the separation unit and the detector is controlled based on the analysis schedule.