What diagnostic tests are used to assess incomplete emptying of the bladder?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Doctors diagnose incomplete bladder emptying using several key tests. The most common is a post-void residual (PVR) measurement, which checks how much urine remains in the bladder after urination, typically using an ultrasound or catheter. Additional diagnostic tools include bladder scans, urodynamic testing to evaluate bladder function and pressure, cystoscopy to view the inside of the bladder, and uroflowmetry to measure urine flow rate.

If you're experiencing symptoms like difficulty urinating, weak stream, or feeling like your bladder isn't fully empty, don't wait to find answers. A free, instant, online symptom check can help you identify possible causes, understand your risk level, and guide your next steps—whether that means seeing a specialist or asking your doctor about specific tests. Taking a few minutes now could save you time, worry, and unnecessary complications later.

Reviewed for medical accuracy: 07/15/2026

Quick answers

Frequently Asked Questions

4 answers

The most common questions people search after this page

Concerned about your symptoms?

Start a symptom check

Explanation

To find out if the bladder is not emptying all the way, doctors use different tests.

Post-Void Residual (PVR) Measurement: This test checks how much urine is left in the bladder after you pee. Doctors can measure this using an ultrasound or by inserting a small tube called a catheter into the bladder to drain and measure the leftover urine.
Urodynamic Testing: This test looks at how well the bladder and urethra are working. It can help find out if there are problems with how the bladder fills and empties.
Bladder Scans: These are special scans that help see how the bladder is working. They can show if the bladder is holding too much urine or if there are other issues.

If you're experiencing symptoms of incomplete bladder emptying, you can take a free AI symptom checker to better understand your condition before consulting with a doctor. These tests help doctors understand why someone might feel like they haven't fully emptied their bladder. This is important because not emptying the bladder completely can cause problems like infections or discomfort. By using these tests, doctors can find the best way to help the bladder work better.

(References)

Van Kuiken M, Volkin D, Zaila Ardines K, Lin FC, Fullerton M, Kwan L, & Nitti VW. (2022). Sensation of incomplete bladder emptying in women. Neurourology and urodynamics, 34913516.
Özlülerden Y, Toktaş C, Zümrütbaş AE, Gülten MC, Başer A, Yapıcı O, & Aybek Z. (2018). Can feeling of incomplete bladder emptying reflect .... Investigative and clinical urology, 29333513.
Garrett VE, Scott JA, Costich J, Aubrey DL, & Gross J. (1989). Bladder emptying assessment in stroke patients. Archives of physical medicine and rehabilitation, 2916918.

Tell your friends about us.

We would love to help them too.

For First Time Users

What is Ubie’s Doctor’s Note?

We provide a database of explanations from real doctors on a range of medical topics. Get started by exploring our library of questions and topics you want to learn more about.

Was this page helpful?

Purpose and positioning of servicesUbie Doctor's Note is a service for informational purposes. The provision of information by physicians, medical professionals, etc. is not a medical treatment. If medical treatment is required, please consult your doctor or medical institution. We strive to provide reliable and accurate information, but we do not guarantee the completeness of the content. If you find any errors in the information, please contact us.