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Blood in the Urine
(Hematuria)

Understanding Blood in Urine (Hematuria): Facts

  • Blood in the urine is medically referred to as hematuria.
  • Hematuria may be visible with the naked eye (gross hematuria) or identified on microscopic urinalysis (microscopic hematuria).
  • Hematuria may be caused by many conditions, and not all causes of hematuria are serious.
  • Strenuous exercise and certain medications can cause hematuria.
  • Kidney stones, urinary tract infections, kidney disease, blood diseases, and some cancers are all known causes of blood in the urine.
  • Blood in the urine should always be evaluated by a doctor.
  • Blood in the urine may occur on its own or may accompany other symptoms.
  • Urinalysis, blood tests, cystoscopy, and imaging tests are used to diagnose the cause of blood in the urine.

What Is Hematuria (Blood in Urine)? Definition

Blood in the urine is medically known as hematuria. Doctors often further differentiate hematuria into gross hematuria (blood that can be seen in the urine with the naked eye; often the urine is red in color) or microscopic hematuria (blood cells identified on microscopic examination of the urine). Blood in the urine can occur due to many medical conditions and diseases. Blood in the urine may be associated with painful urination, abdominal or pelvic pain, pus in the urine, or other symptoms, depending upon the cause. It is also possible to have blood in the urine that is not associated with pain or other symptoms.

Medically Reviewed by a Doctor on 11/28/2016

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Patient Comments & Reviews

The eMedicineHealth doctors ask about Blood in the Urine:

Blood in the Urine (Hematuria) - Causes

What caused your hematuria?

Blood in the Urine (Hematuria) - Treatment

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Blood in the Urine (Hematuria) - Diagnosis

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Blood in Urine Test

Urinalysis (UA) simply means analysis of urine. This is a very commonly ordered test that is performed in many clinical settings such as hospitals, clinics, emergency departments, and outpatient laboratories.



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