Blood analyzer, blood analyzing method, and program

A blood analyzer comprising:

• an agitation part that agitates a blood preparation;
• a specimen preparation part that prepares a measurement specimen by mixing a reagent with the blood preparation agitated by the agitation part;
• a measurement part that measures the measurement specimen;
• a display part that displays a reception screen through which a type of the blood preparation as a measurement target is selected from a plurality of types of blood preparations;
• and
• a controller, wherein
• the controller causes the agitation part to agitate the blood preparation with an intensity of agitation depending on the selected type of the blood preparation before mixing the reagent with the blood preparation, and causes the specimen preparation part to prepare the measurement specimen by mixing the reagent with the agitated blood preparation;
• and
• the intensity of agitation for a selected type of blood preparation being a red blood cell preparation is greater than the intensity of agitation for a selected type of blood preparation being a platelet preparation.