Blood in the Urine

What does “microscopic hematuria” mean?

Microscopic hematuria means there are red blood cells in your urine. You can’t see them with your eyes — they only show up on a urine test.

When it’s called asymptomatic microscopic hematuria, it means:

• Blood cells are in the urine
• You don’t feel pain, burning, or see blood
• You wouldn’t know about it without a lab test

Should I worry if I feel fine?

Not necessarily. Many women who have microscopic hematuria are healthy. But sometimes, it can be an early clue that something else is going on. That’s why doctors take it seriously.

What can cause microscopic hematuria?

Some causes are harmless or temporary, like:

• Exercise
• Menstrual blood getting into the urine sample
• A mild urinary tract infection

Other causes need more attention, such as:

• Kidney stones
• Kidney disease
• Bladder problems
• (Rarely) cancer of the urinary tract
  

How is it found?

• Routine urine test (urinalysis)
• Microscope exam of the urine to confirm blood cells are present
• Sometimes, a repeat test — because one abnormal result doesn’t always mean a problem
  

What tests might my urologist recommend?

If microscopic hematuria shows up more than once, your doctor may suggest:

• Urine culture – to check for infection
• Imaging – like an ultrasound or CT scan to look at your kidneys and urinary tract
• Cystoscopy – a tiny camera to look inside your bladder

Your age, medical history, and risk factors help decide which tests are best for you.

What should I do if I’m told I have microscopic hematuria?

1. Don’t panic. Most women don’t have a serious problem.
2. Follow up. Always complete the testing your doctor recommends.
3. Know your risks. Smoking, age over 50, family history of bladder or kidney disease, and certain medicines increase risk.
4. Stay on top of it. Even if your first evaluation is normal, your doctor may suggest follow-up checks.
   

Bottom line

Microscopic hematuria means blood cells are in your urine — but you don’t have symptoms. It’s often harmless, but it can sometimes point to something more serious. The only way to know is to follow up with a urologist who understands women’s urinary health.

Disclaimer

The information on this website is for educational purposes only and is not medical advice. Use of this site does not create a doctor–patient relationship. If you have a medical concern, please consult a qualified healthcare provider. In case of emergency, call 911 immediately.