Urology• Updated 21 October 2026
Uroflowmetry
A simple test that measures how fast and how much urine you pass.
Results: Immediately
Quick Summary
Primary Purpose
To assess weak flow, especially with an enlarged prostate.
What It Measures
Peak flow rate and voided volume.
Preparation
Arrive with a comfortably full bladder.
Overview
You pass urine into a special toilet or funnel.
A bladder scan afterwards may check leftover urine.
What It Measures
Flow rate
Speed of urine flow.
Volume
Amount passed.
How It's Performed
- 01
Full bladder
Drink water beforehand.
- 02
Pass urine
Into the flow meter in private.
- 03
Scan
Bladder scan if needed.
Interpreting Results & Next Steps
Discuss with Doctor
Your doctor will explain what your result means and what happens next.
If values are Low:
A low flow rate suggests blockage or weak bladder muscle.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- Uroflowmetry(opens in a new tab) · MedlinePlus, US National Library of Medicine