At baseline, a small catheter is placed inside the participant's bladder. The bladder is filled with sterile water through the catheter. As the bladder is filled, the participant is asked to rate their urinary urgency using the Urgeometer. The Urgeometer lever marks a continuous scale from 0 `no urge at all` to 100 `maximum urge which you can tolerate'. The testing is stopped once the bladder is filled. To minimize the chance of infection, participants receive one dose of oral antibiotics prior to the bladder testing.