Illustration of a blue bacteria.

I have asymptomatic bacteriuria

Asymptomatic bacteriuria is the presence of bacteria in the urine without symptoms. This resource explains its causes, risks, and when treatment may be needed.

What is asymptomatic bacteriuria?

Asymptomatic bacteriuria is when bacteria are in your urine, but you don’t have any signs of an infection, like pain or fever. It’s common, especially in older adults, and usually doesn’t need treatment unless other problems happen.

You would not know if you have asymptomatic bacteriuria because it doesn’t cause any symptoms.

If you have symptoms like pain, burning, or a stinging feeling when you pee, or if your urine is dark, cloudy, or has a strong smell, you might have a urinary tract infection.

How would I know if I have it?

The only way to find out is through a urine test that shows bacteria in your urine, even though you're not feeling sick. It’s often found during routine checks or tests for other health problems.

This chapter contains general information about asymptomatic bacteriuria. It is not a substitute for professional medical advice or treatment. Always consult your doctor or healthcare provider for guidance on your individual medical situation.

Last updated: April 2026

Reviewed by: 

  • Prof. Dr. Adrian Pilatz (EAU Guidelines Panel on Urological Infections)