Blood in Urine
Blood in urine, medically called hematuria, may appear as pink, red, or cola-colored urine. It can be due to infections, kidney or bladder stones, trauma, or urological cancers. While sometimes harmless, hematuria always requires medical evaluation.

🚨 Seek Immediate Medical Care
Call emergency services if:
- Sudden onset of gross hematuria (large blood amounts in urine).
- Severe flank pain or inability to pass urine.
- Associated with fever, chills, or vomiting.
- History of kidney disease or urological malignancy.
📞 Consult a Urologist
See a healthcare provider if:
- Urine shows pink or reddish tinge without pain.
- Frequent urinary tract infections occur.
- History of kidney stones or prostate enlargement.
- Symptoms persist beyond a few days or recur.
Common Symptoms & Causes
| Symptom | Possible Cause |
|---|---|
| Pink or red urine | Urinary Tract Infection (UTI) |
| Cola-colored urine | Glomerulonephritis |
| Flank pain with hematuria | Kidney Stones |
| Blood without pain | Bladder or Kidney Tumor |
| Blood with fever or burning sensation | Prostatitis or Urethral Infection |
Causes of Blood in Urine
Urinary Tract Infection (UTI): Infection in kidneys, bladder, or urethra.
Prostatitis: Prostate inflammation may cause hematuria.
Kidney or Bladder Stones: Irritate urinary tract causing bleeding.
Genitourinary Trauma: Accidental injury to kidneys, bladder, or urethra.
Bladder or Kidney Cancer: May cause painless hematuria.
Glomerulonephritis: Kidney inflammation causing blood in urine.
Diagnostic Procedures
Urinalysis
Detects red blood cells, infection, or protein in urine.
Urine Culture
Identifies bacterial infections causing hematuria.
Kidney/Bladder Ultrasound
Detects stones, masses, or structural abnormalities.
Cystoscopy
Direct visualization of bladder and urethra to locate bleeding source.







