What does it mean when urine looks foamy? Should I be concerned if it doesn't go away after a few days?

Answer From Patricio C. Gargollo, M.D.

Passing foamy urine now and then is normal, for the speed of urination and other factors can influence this.

But you should see your doctor if you have persistently foamy urine that becomes more noticeable over time. This can be a sign of protein in your urine (proteinuria), which requires further evaluation. Increased amounts of protein in urine could mean you have a serious kidney problem.

If your urine seems unusually foamy most of the time, your doctor may recommend a urine test to check for elevated levels of protein. If the test is positive, you may need further tests to determine the cause of the problem.

With

Patricio C. Gargollo, M.D.

From Mayo Clinic to your inbox

Sign up for free, and stay up to date on research advancements, health tips and current health topics, like COVID-19, plus expertise on managing health.

To provide you with the most relevant and helpful information, and understand which information is beneficial, we may combine your email and website usage information with other information we have about you. If you are a Mayo Clinic patient, this could include protected health information. If we combine this information with your protected health information, we will treat all of that information as protected health information and will only use or disclose that information as set forth in our notice of privacy practices. You may opt-out of email communications at any time by clicking on the unsubscribe link in the e-mail.

Dec. 24, 2020 See more Expert Answers