A stand for a medical fluid treatment, a system for supporting multi-chamber medical fluid bags and a method for testing whether the multi-chamber bags have been preset properly for therapy are provided. In one embodiment a multi-section stand is provided that is folded in a number of places to produce a structure upon which fluid from a properly preset solution bag flows readily to a patient, but upon which a dual-chamber bag that has not been modified properly for treatment collapses, folds or falls to a position providing visual indication that the chamber seal needs to be released or opened.