An apparatus for detecting a biological data of a target patient from an attachable sensor attached to the target patient includes a circuit. The circuit obtains a first piece of biological data of the target patient and second piece of biological data of the target patient that is a different type of biological data than the first piece of biological data. The first piece of biological data and the second piece of biological data is collected by the sensor. The circuit standardizes the first piece of biological data on the basis of the second piece of biological data so as to generate standardized biological data.