Abstract: An improved specimen container comprising a receptacle, a lid having a top surface and a bottom surface and a bore therethrough, and a resealable membrane plug which has an upper and lower annular shoulder, at least one of which shoulders is deformable, and which is inserted through and seated in the bore of the lid so that said upper annular shoulder is seated on the top surface of the lid and the lower annular shoulder is seated on the bottom surface of the lid, and a plug cover which can be raised and lowered by the user with one hand leaving the user's other hand free to insert a specimen into, or withdraw a specimen from, the specimen container.