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How is a post-void residual urine test done?

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There are two ways:

Some researchers think catheters measure urine in the bladder better than an ultrasound, while others think the two tests work equally well.

  • Catheter: A nurse slides a thin, flexible tube called a catheter through your urethra (where pee comes out) and into your bladder, then takes out the urine.
  • Ultrasound: A machine uses sound waves to show live images of your bladder so your doctor can see how much urine is there.

From: What Is a Post-Void Residual Urine Test? WebMD Medical Reference

SOURCES:

Reviews in Urology : “Evaluation of Voiding Dysfunction and Measurement of Bladder Volume.”

National Institute of Diabetes and Digestive and Kidney Diseases: “Urodynamic Testing,” “Urinary Tract Imaging.”

Ontario Health Technology Assessment Series: “Portable Bladder Ultrasound: An Evidence-Based Analysis.”

Canadian Family Physician: “Ultrasound bladder scanner presents falsely elevated postvoid residual volumes.”

Cleveland Clinic: “Bladder Outlet Obstruction.”

Reviewed by Minesh Khatri on February 12, 2018

SOURCES:

Reviews in Urology : “Evaluation of Voiding Dysfunction and Measurement of Bladder Volume.”

National Institute of Diabetes and Digestive and Kidney Diseases: “Urodynamic Testing,” “Urinary Tract Imaging.”

Ontario Health Technology Assessment Series: “Portable Bladder Ultrasound: An Evidence-Based Analysis.”

Canadian Family Physician: “Ultrasound bladder scanner presents falsely elevated postvoid residual volumes.”

Cleveland Clinic: “Bladder Outlet Obstruction.”

Reviewed by Minesh Khatri on February 12, 2018

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How does the ultrasound method for a post-void residual urine test work?

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