Blood in the urine is also called hematuria. Normally, urine does not contain blood.
There are two kinds of hematuria:
In some cases, the cause of hematuria is never found. The list of known causes is lengthy. Some more common causes include:
Risk factors include:
Kidney Stones Can Cause Microscopic Hematuria
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In some cases, there may not be additional symptoms.
But, if you have an underlying condition, you may have other symptoms. For example, kidney stones can cause blood in the urine, along with pain in the side, abdomen, or groin.
Call your doctor any time you notice blood in your urine.
Your doctor will ask about your symptoms and medical history. A physical exam will be done. You may be referred to a doctor who specializes in kidney disease (nephrologist) or the urinary system (urologist).
Your doctor may need to test your bodily fluids. This can be done with:
Your doctor may need to view your bodily structures. This can be done with:
Treatment will depend on the cause of hematuria. Some causes of hematuria require no treatment (eg, exercise-induced) or will resolve on their own (eg, passage of a kidney stone). Other causes will respond to medicine. For example, treating a urinary tract infection with antibiotics will stop the hematuria. Still other causes may require surgery, such as the removal of a bladder or treatment for prostate cancer .
American Academy of Family Physicians
National Kidney Foundation
BC Health Guide
The Kidney Foundation of Canada
Hematuria in children. National Kidney Foundation website. Available at: http://www.kidney.org/atoz/content/hematuria.cfm . Accessed January 10, 2013.
Dambro MR. Griffith’s 5-minute Clinical Consult . 13th ed. Lippincott Williams and Wilkins; 2005.
Hematuria in adults. EBSCO DynaMed website. Available at: http://www.ebsochost.com/dynamed . Updated October 9, 2012. Accessed January 10, 2013.
Hematuria in children. EBSCO DynaMed website. Available at: http://www.ebsochost.com/dynamed . Updated November 20, 2010. Accessed January 10, 2013.
Microscopic hematuria. Am Fam Physician. American Family Physician website. Available at: http://www.aafp.org/afp/990915ap/990915b.html . Accessed January 10. 2013.
Urination problems. American Academy of Family Physicians. Family Doctor.org website. Available at: http://familydoctor.org/familydoctor/en/health-tools/search-by-symptom/urination-problems.html . Accessed January 10, 2013.
Last reviewed January 2013 by Adrienne Carmack, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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