Hematuria refers to the presence of blood in the urine. It may appear visibly red or pink (gross hematuria) or be detectable only under a microscope (microscopic hematuria). While not always a sign of a serious condition, hematuria should never be ignored—especially if persistent or painless. Early evaluation is essential to identify the cause and rule out urinary tract cancers, infections, stones, or structural abnormalities.
Causes of Hematuria
Hematuria can arise from many conditions affecting the urinary tract, including:
- Kidney Stones: Stones can scrape or irritate the urinary tract, causing bleeding.
- Urinary Tract Infections (UTIs): Inflammation of the bladder or kidneys may lead to blood in the urine.
- Bladder or Kidney Cancer: Often presents as painless, intermittent bleeding.
- Enlarged Prostate (BPH): May result in blood in the urine due to increased pressure in surrounding vessels
- Urethral Strictures or Trauma: Narrowing or injury to the urethra can lead to bleeding
- Glomerular Disease or Other Kidney Disorders
- Post-surgical or Catheter-related Bleeding
Symptoms to Watch For
Hematuria can appear alarming, but even a very small amount of blood—similar to a drop of food coloring—can turn urine visibly red. The most concerning symptom is the formation of blood clots, which can block the bladder and lead to urinary retention.
Additionally, if bleeding is persistent, recurrent, or accompanied by pain, fever, or difficulty urinating, you should be evaluated by a urologist. Persistent hematuria should never be ignored, even if it is painless.
Diagnosis
A complete evaluation often includes the 4 C’s of hematuria:
- Urine Culture: To rule out infection
- Urine Cytology: To rule out infection
- Cystoscopy: A minimally invasive procedure to inspect the bladder and urethra
- CT urogram: to identify kidney stones, tumors, or structural abnormalities
Treatment Options
Management depends entirely on the cause:
- Infections: Managed with targeted antibiotics.
- Stones: May require medical management, lithotripsy, or surgical removal
- BPH or Prostate Issues: Treated with medications or, when persistent, surgical procedures (such as HoLEP).
- Cancer: Managed with a personalized approach that may include surgery, chemotherapy, or immunotherapy.
- Trauma or Structural Issues: May require endoscopic or reconstructive intervention.
When to See a Urologist
Any visible blood in the urine should be evaluated by a urologist. Even microscopic hematuria (more than 3 red blood cells in the urinalysis test) can signal a significant condition. Early assessment allows for timely diagnosis, appropriate treatment, and better long-term outcomes.