Various aspects of the subject disclosure relate to a compounder system having a cartridge that includes fluid pathways controllable by valves of the cartridge. A pump component within the cartridge is actuable to move fluid through the controllable fluid pathways. Dual-lumen tubing coupled to the cartridge at a first end includes a fluid line and a vent line attached, at a second end, to a connector for a receiving container for a compounded drug.
