Apparatus for controlling an extra-corporeal blood treatment in a medical device, comprising a blood treatment device (7), an extra-corporeal blood transport line (4), a fluid transport line (3) for a treatment fluid for the blood, at least a sensor adapted to provide a measure (M) correlated to at least a treatment parameter of the extra-corporeal blood treatment and/or of the treatment device (7) in the medical device (1), at least one storage memory (29), and at least a control device (28), operatively connected at least with the storage memory (29) and with the sensor, and configured for receiving the measure (M) from the sensor, correlating the measure (M) with referential data (R) of the treatment device for the treatment parameter provided by the at least one storage memory (29), and correlating the measure (M) with patient historical data (H) for the treatment parameter for obtaining an information representative of the quality of the extra-corporeal blood treatment.
