To control a concentration of a prescribed component in a humor to a prescribed concentration or more.SOLUTION: The implementation method of intravenous drip injection includes: a first step of starting to administer a transfusion including a prescribed component by intravenous drip injection to an administration object person； a second step of collecting a humor from the administration object person to whom the transfusion is administered； a third step of measuring a concentration of the prescribed component in the collected humor； and a fourth step of changing the concentration of the prescribed component in the transfusion according to the concentration of the prescribed component in the humor.SELECTED DRAWING: Figure 4【課題】体液中における所定成分の濃度を所定の濃度以上に制御する。【解決手段】本点滴注射の実施方法は、被投与者への点滴注射による所定成分を含む輸液の投与を開始する第１の工程と、前記輸液が投与されている前記被投与者から体液を採取する第２の工程と、採取した前記体液中における前記所定成分の濃度を測定する第３の工程と、前記体液中の所定成分の濃度に応じて前記輸液中の前記所定成分の濃度を変更する第４の工程と、を含む。【選択図】図４
