Microscopic Hematuria | Causes & Risk Factors


What are some common causes of microscopic hematuria?

Here are some common causes of blood in the urine:

  • Kidney infections
  • Enlarged prostate
  • Urinary tract (bladder) infection
  • Swelling in the filtering system of the kidneys (this is called "glomerulonephritis")
  • A stone in your bladder or in a kidney
  • A disease that runs in families, such as cystic kidney disease
  • Some medicines
  • A blood disease, like sickle cell anemia
  • A tumor in your urinary tract (this may or may not be cancer)
  • Exercise (when this is the cause, hematuria will usually go away in 24 hours)


Evaluation of Asymptomatic Microscopic Hematuria in Adults by TR Thaller, M.D. and LP Wang, M.D. (American Family Physician September 15, 1999, http://www.aafp.org/afp/990915ap/1143.html)

Written by familydoctor.org editorial staff

Reviewed/Updated: 03/14
Created: 09/00