A hermetically sealed thermoplastic container or ampoule having a hollow body portion, a neck portion unitary with the body portion and terminating in a circumferential, inwardly extending sealing flange, and a removable cap. The neck portion defines an access passageway to the hollow body portion configured as a Luer female fitting adapted to receive a Luer male connector when the access passageway is open. The outer surface of the neck portion is provided with lugs for engaging a Luer lock male connector and the like.