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 asymptomatic bacteriuria?

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.

Should I be concerned about asymptomatic bacteriuria?

Usually, asymptomatic bacteriuria isn’t a problem and doesn’t need treatment. But it could be a concern if you’re pregnant, having surgery, or have health problems like a weak immune system or kidney problems. If you're worried, it’s best to talk to your doctor to see if anything needs to be done.

If treatment is needed, doctors usually give antibiotics to get rid of the bacteria in your urine. But it’s important to only use antibiotics when necessary because using them too much can make them less effective in the future.

If you’re pregnant or having certain treatments that involve the urinary tract, you’ll be tested for asymptomatic bacteriuria because it can lead to urinary infections.

In older adults, asymptomatic bacteriuria can sometimes go away on its own, but it often comes back or lasts longer.

To help stop asymptomatic bacteriuria from coming back, you can:

• Drink lots of water throughout the day.
• Wipe from front to back after using the toilet.
• Pee right after sex to help flush out any bacteria.

The information provided here is general and may vary based on where you live. You may want to ask your doctor for advice that's specific to your situation.

• What is asymptomatic bacteriuria, and why do I have it?
• Do I need treatment for it, or can it go away on its own?
• Can it cause any problems later on?
• How can keep it from coming back?
• Should I be tested again to see if the bacteria are still there?
• Are there any changes I should make to my daily routine to help avoid infections?
• Will this affect my overall health in any way?
• Is there any risk to my kidneys or other organs?
• How often should I be checked for this condition?
• Is asymptomatic bacteriuria different from other urinary tract infections?

These questions can help you understand the condition and what steps to take next.

This chapter contains general information about asymptomatic bacteriuria. If you have any specific questions about your own medical situation you should consult your doctor or other professional healthcare provider. No website or leaflet can replace a personal conversation with your doctor.

Last updated: February 2025