A medical stopcock includes a main body having an input port and an output port, a valve body having a handle and a syringe port, with the valve body moveable relative to the main body and defining a valve passageway. The valve body includes a first position where the input port and the output port are in fluid communication via the valve passageway, a second position where the syringe port and the output port are in fluid communication via the valve passageway, and a third position where the syringe port and the input port are in fluid communication via the valve passageway. Rotation of the syringe port is configured to move the valve body relative to the main body.