A method for draining an extracorporeal fluid circuit (100, 200, 300, 400, 500) utilizing a dialysis machine (110, 210, 310, 410, 510), wherein the dialysis machine (110, 210, 310, 410, 510) is connected to a dialyzer (130, 230, 330, 430, 530) and said extracorporeal fluid circuit (100, 200, 300, 400, 500), wherein the extracorporeal fluid circuit (100, 200, 300, 400, 500) comprises an arterial line (101, 201, 301, 401, 501) connectable to a patient for drawing blood from the patient and a venous line (102, 202, 302, 402, 502) connectable to the patient for returning blood to the patient, the method comprising: after treatment termination from said extracorporeal fluid circuit (110, 210, 310, 410, 510), draining (1000, 2000, 3000) remaining fluid from said extracorporeal fluid circuit through the membrane of the dialyzer (130, 230, 330, 430, 530), wherein the dialyzer (130, 230, 330, 430, 530, 630) is connected to the dialysis machine (110, 210, 310, 410, 510) via a dialyzer fluid circuit (193, 194, 293, 294, 393, 394, 493, 494, 593, 594) for distribution of dialysis fluid to and from the dialyzer (130, 230, 330, 430, 530), wherein the extracorporeal fluid circuit (110, 210, 310, 410, 510) is drained through the dialyzer (130, 230, 330, 430, 530) by applying a negative pressure on the dialyzer fluid circuit (193, 194, 293, 294, 393, 394, 493, 494, 593, 594) relative the extracorporeal fluid circuit (100, 200, 300, 400, 500), wherein the negative pressure applied on the dialyzer fluid circuit (193, 194, 293, 294, 393, 394, 493, 494, 593, 594) relative the extracorporeal fluid circuit (100, 200, 300, 400, 500) by means of introducing gas into the extracorporeal fluid circuit (100, 200, 300, 400, 500), wherein the arterial line (101, 201, 301, 401) comprises a first port (191, 291, 491) connectable to the patient, and the venous line (102, 202, 402) comprises a second port (192, 292, 492) connectable to the patient, characterized in that the method further comprises connecting (1015, 2015) the first port (191, 291, 491) to the second port (192, 292, 492) prior to introducing the gas into the extracorporeal fluid circuit (100, 200, 400). after treatment termination from said extracorporeal fluid circuit (110, 210, 310, 410, 510), draining (1000, 2000, 3000) remaining fluid from said extracorporeal fluid circuit through the membrane of the dialyzer (130, 230, 330, 430, 530), wherein the dialyzer (130, 230, 330, 430, 530, 630) is connected to the dialysis machine (110, 210, 310, 410, 510) via a dialyzer fluid circuit (193, 194, 293, 294, 393, 394, 493, 494, 593, 594) for distribution of dialysis fluid to and from the dialyzer (130, 230, 330, 430, 530), wherein the extracorporeal fluid circuit (110, 210, 310, 410, 510) is drained through the dialyzer (130, 230, 330, 430, 530) by applying a negative pressure on the dialyzer fluid circuit (193, 194, 293, 294, 393, 394, 493, 494, 593, 594) relative the extracorporeal fluid circuit (100, 200, 300, 400, 500), wherein the negative pressure applied on the dialyzer fluid circuit (193, 194, 293, 294, 393, 394, 493, 494, 593, 594) relative the extracorporeal fluid circuit (100, 200, 300, 400, 500) by means of introducing gas into the extracorporeal fluid circuit (100, 200, 300, 400, 500), wherein the arterial line (101, 201, 301, 401) comprises a first port (191, 291, 491) connectable to the patient, and the venous line (102, 202, 402) comprises a second port (192, 292, 492) connectable to the patient, characterized in that the method further comprises connecting (1015, 2015) the first port (191, 291, 491) to the second port (192, 292, 492) prior to introducing the gas into the extracorporeal fluid circuit (100, 200, 400).