Abstract: A liquid specimen transfer container, designed to prevent contamination, provides two interconnected storage chambers. The first chamber receives donor inputs via an integral basin which prevents splashing. Input in excess of a measured volume overflows into the second storage chamber for retention and later recovery. A removable closure such as a cap or plug, or suitable valve means such as a rupturable seal, prevents discharge of liquid from first chamber until the transfer container is connected to a receiving vessel such as a laboratory test instrument requiring a measured sample.