ALERTS & COVID-19 UPDATES Learn more: COVID-19 Resources; COVID-19 Testing; Vaccine Info; Visitor Policy; Support Us

Lahey Health is now part of Beth Israel Lahey Health

by EBSCO Medical Review Board
(Blood in the Urine—Adult)

Definition

Hematuria is blood in the urine. Normally, urine does not contain any blood.

There are two kinds of hematuria:

  • Microscopic hematuria—small amount of blood that is not visible to the naked eye
  • Gross hematuria—enough blood to make urine appear red or tea-colored

Causes

In some people, the cause is not known. Many things can cause this problem. Some common ones are:

Risk Factors

Things that may raise the risk of this problem are:

  • Smoking
  • Taking certain medicines, such as antibiotics and pain relievers
  • A family history of kidney problems
Kidney Stone
si1991 96472 1
Copyright © Nucleus Medical Media, Inc.

Symptoms

You may not have any other symptoms.

You may also have symptoms related to the cause. For example, kidney stones can cause pain in the side, belly, or groin.

Diagnosis

You will be asked about your symptoms and health history. A physical exam will be done. You may be referred to a specialist.

To help find a cause, your doctor may do:

  • Urine tests
  • Blood tests

Your pelvic and belly structures may need to be viewed. This can be done with:

Treatment

Some people will not need treatment. Symptoms may go away on their own.

In others, treatment will depend on the cause. Medicine or surgery may be needed.

Prevention

Prevention will depend on the cause.

RESOURCES

Family Doctor—American Academy of Family Physicians  https://familydoctor.org 

National Kidney Foundation  https://www.kidney.org 

CANADIAN RESOURCES

HealthLink BC  https://www.healthlinkbc.ca 

The Kidney Foundation of Canada  https://www.kidney.ca 

References

Gross hematuria—approach to the adult. EBSCO DynaMed website. Available at: https://www.dynamed.com/approach-to/gross-hematuria-approach-to-the-adult. Accessed September 17, 2021.

Hematuria in children. National Kidney Foundation website. Available at: https://www.kidney.org/atoz/content/hematuria. Accessed September 17, 2021.

Hematuria in children—approach to the patient. EBSCO DynaMed website. Available at: https://www.dynamed.com/approach-to/hematuria-in-children-approach-to-the-patient. Accessed September 17, 2021.

Microhematuria—approach to the adult. EBSCO DynaMed website. Available at: https://www.dynamed.com/approach-to/microhematuria-approach-to-the-adult-28. Accessed September 17, 2021.

Urination problems. Family Doctor—American Academy of Family Physicians website. Available at: https://familydoctor.org/symptom/urination-problems. Accessed September 17, 2021.

Revision Information