Provided are a blood test support device, a blood test support system, a blood test support method, and a program that can reduce a burden on a medical examinee and obtain highly accurate test results. The blood test support device includes an information acquisition unit that acquires an order for a blood test kit from a medical examinee; a storage unit that stores the medical examinee and an identification number given to the blood test kit in association with each other; a processing unit that calculates a recommended date and time at which blood collection is performed using the blood test kit to which the identification number is given; and an information output unit that outputs the identification number of the blood test kit and the recommended date and time in placing the order from the medical examinee.