Systems and methods for collecting biological waste from a human person are disclosed. In various embodiments, the disclosed systems can have a bedpan with a receptacle base and a floor, a side wall extending from the floor, and a substantially open top. In various embodiments, disclosed systems can have a lid engagable to cover the substantially open top, the lid being provided with an aperture therethrough. Some embodiments of the present systems can have a disposable bag having dimensions so as to allow the disposable bag to cover the bedpan, and to line the interior. Some embodiments of the present invention can have a disposable bag dispenser configured to store and dispense a disposable bag prior to use by the human person. Various embodiments of the present systems can have an elongate, substantially planar spatula to facilitate use of the disclosed systems. Methods for using the disclosed systems are further disclosed.