It is common to have voiding difficulties after prolapse and incontinence surgeries. Difficulties in voiding are seen in up to 47% of patients after transvaginal prolapse surgery in the immediate hours postoperatively (6). Accepted protocols for voiding trials after prolapse and incontinence surgeries do not exist. Traditionally, many surgeons measure postvoid residual (PVR) urine volume to assess incomplete bladder emptying by retrograde filling the bladder with a predetermined amount of normal saline or water. The catheter is then removed and the patient is permitted to void into a collection basin. The need for postoperative catheterization is generally based on arbitrarily determined ratios of voided urine to PVR. The force of stream trial (FAST) does not prioritize amount voided, but rather the patient's subjective force of stream. Using FAST, a patient uses a visual analog scale (VAS) scale to quantify her force of stream. If she states that her Force of Stream (FOS) is >50% of her baseline prior to surgery, independent of the amount voided, she is discharged without a catheter. If the FOS is <50%, a PVR is measured via bladder scan. If her PVR is <500cc the patient is discharged home.