A sample analyzer, comprising: a reagent storage section (250, 251) that is connected to a reagent container (200, 201) containing a reagent through a fluid channel (210, 211) and that stores the reagent transferred from the reagent container (200, 201), a measurement section that is connected to the reagent storage section (250, 251) through a fluid channel (210, 211) and that measures a sample using the reagent, a transfer unit that transfers the reagent from the reagent container (200, 201) to the reagent storage section (250, 251) and then from the reagent storage section (250, 251) to the measurement section, a reagent container remaining amount detection means for detecting that the remaining amount in the reagent container (200, 201) is a predetermined amount or less, a replacement message output means that outputs a message for prompting replacement of the reagent container (200, 201) when the reagent container remaining amount detection means detects that the remaining amount in the reagent container (200, 201) is the predetermined amount or less, and the sample analyzer further comprising: a storage remaining amount detection means for detecting that the remaining amount in the reagent storage section (250, 251) is a predetermined amount or less, characterised in that: the sample analyzer further comprises: a measurement suspension message output means that outputs a measurement suspension message for prompting to suspend sample measurement in the measurement section when the storage remaining amount detection means detects that the remaining amount in the reagent storage section (250, 251) is the predetermined amount or less. a reagent storage section (250, 251) that is connected to a reagent container (200, 201) containing a reagent through a fluid channel (210, 211) and that stores the reagent transferred from the reagent container (200, 201), a measurement section that is connected to the reagent storage section (250, 251) through a fluid channel (210, 211) and that measures a sample using the reagent, a transfer unit that transfers the reagent from the reagent container (200, 201) to the reagent storage section (250, 251) and then from the reagent storage section (250, 251) to the measurement section, a reagent container remaining amount detection means for detecting that the remaining amount in the reagent container (200, 201) is a predetermined amount or less, a replacement message output means that outputs a message for prompting replacement of the reagent container (200, 201) when the reagent container remaining amount detection means detects that the remaining amount in the reagent container (200, 201) is the predetermined amount or less, and the sample analyzer further comprising: a storage remaining amount detection means for detecting that the remaining amount in the reagent storage section (250, 251) is a predetermined amount or less, characterised in that: the sample analyzer further comprises: a measurement suspension message output means that outputs a measurement suspension message for prompting to suspend sample measurement in the measurement section when the storage remaining amount detection means detects that the remaining amount in the reagent storage section (250, 251) is the predetermined amount or less. the sample analyzer further comprises: a measurement suspension message output means that outputs a measurement suspension message for prompting to suspend sample measurement in the measurement section when the storage remaining amount detection means detects that the remaining amount in the reagent storage section (250, 251) is the predetermined amount or less.