Overview

The post-void residual (PVR) urine test measures the amount of urine left in the bladder after urination.

The test is used to help evaluate:

• Incontinence (accidental release of urine).
• Urination problems, including those caused by infections or by problems with nerve signals in the brain.
• An enlarged prostate (benign prostatic hyperplasia, or BPH).

The amount of leftover (residual) urine can be measured by draining the bladder with a thin flexible tube (catheter) or by using ultrasound.