Abstract: The present invention is a sample analyzer, comprising: an analyzing section for analyzing a sample; a memory for storing analysis results of the sample by the analyzing section and an event history information indicating an event that occurred in the sample analyzer; an input device used to specify an analysis result from a plurality of analysis results stored in the memory; a display; and a controller for acquiring an event history information related to the analysis result specified by the input device from the memory and controlling the display to show information related to a cause of uncertainty of the specified analysis result based on the acquired event history information.