The acceptable amount voided during catheterization varies among practitioners. In a study by Kleeman et al, the patient was required to void >50% of volume filled during retrograde fill for discharge from hospital without an indwelling Foley catheter (2). Pulvino et al, required that the patient void > 2/3 the amount of the volume placed during retrograde fill (3). The force of stream trial (FAST) does not prioritize amount voided, but rather the patient's subjective force of stream. The bladder is retrograde filled with 300cc normal saline or water and the patient is instructed to void.. Using FAST, a patient uses a VAS scale to quantify her force of stream. If she states that her Force of Stream (FOS) is >50% stronger than prior to surgery, independent of the amount voided, she is discharged without a catheter. If the FOS is <50% a PVR via bladder scan is performed. If her PVR is <500cc the patient was discharged home without a catheter in place. If the PVR, via bladder scan was > 500cc she was discharged with a catheter. Ingber et. Al. showed the FAST method was a safe method for predicting postoperative voiding dysfunction and/or urinary retention. No patients presented to the office or emergency room for voiding dysfunction or urinary retention (4).