Urine left after passing urine.
General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.
A bladder scan, also known as a post-void residual, measures the amount of urine left in the bladder after emptying. This test is typically done to evaluate urinary flow, detect bladder or prostate enlargement, or assess for post-void residual urine. It usually requires no preparation unless specifically advised by the center. The procedure is safe for pregnant women. It takes about 5 minutes and results should be interpreted by a qualified health worker.
Urine left after passing urine.
Poor stream, retention, enlarged prostate.
Usually no preparation; some scans need fasting or a full bladder, as the centre advises.
No ionising radiation (sound waves). Safe in pregnancy.
5 minutes. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
Consult a doctor to interpret results — a single test does not make a diagnosis.
Uses your location once to list the nearest facilities. Nothing is stored.
Why is Bladder scan (post-void residual) done?
Poor stream, retention, enlarged prostate.
How do I prepare for Bladder scan (post-void residual)?
Usually no preparation; some scans need fasting or a full bladder, as the centre advises.
Is Bladder scan (post-void residual) safe in pregnancy?
No ionising radiation (sound waves). Safe in pregnancy.
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