A method is provided for assessing urinary function including removably coupling a first test module to a portable control device, selecting from a plurality of different tests a first test to assess urinary function, the selection being made based on first module identification information obtained by the control device from the test module, and performing the first test. The method may also include one or more of the steps of inserting an insert member coupled to the first test module at least partially into a patient's urinary tract, infusing fluid through the insert member into the urinary tract, and measuring pressure within the urinary tract as fluid is infused therein. The method may further include uncoupling the first test module from the portable control device, coupling a second test module to the portable control device, selecting a second test to assess urinary function based on second module identification information obtained by the control device from the second test module, and performing the second test.