The invention relates to a method for withdrawing blood from an extracorporeal blood circuit (2000) and/or from a functional apparatus (1000), which each can be or are connected to a blood treatment device for the purpose of a blood treatment of a patient, after the blood treatment session has ended, wherein the blood treatment device has or is connected to: at least one extracorporeal blood circuit (2000) having a line interior, wherein the extracorporeal blood circuit (2000) has at least one arterial line segment (1) and at least one venous line segment (3)； at least one one blood pump (4000) for conveying blood within the line interior； and at least one second conveying apparatus (5000), wherein the method comprises the step of operating the blood pump (4000) in a second conveying direction that is opposite the first conveying direction that is typical during the blood treatment, wherein a first segment of the arterial line segment (1) is or becomes connected to a second segment of the venous line segment (3) of the extracorporeal blood circuit (2000). The invention further relates to corresponding devices.
