A method and apparatus including attachment of a fluid evacuation bag to the feeding port of the G-tube using an adapter fitting disposed between and interconnecting the G-tube and the evacuation bag. The adapter fitting has a proximal end that is sized to fit in and frictionally engage the feeding port of the G-tube, and a distal end that is sized to receive and frictionally engage tube end fitting extending from the evacuation bag. The adapter fitting allows open fluid communication from the G-tube to the evacuation bag so that fluids draining from the G-tube may be safely and conveniently collected and disposed of.