Blood in Urine (Hematuria): When to Get Checked and Results to Watch

Discover what blood in urine means, potential causes, and when to consult a doctor.

Sep 18, 2026 2 min read

Blood in urine, known medically as hematuria, can be alarming but isn't always a cause for panic. It can result from various conditions, some harmless and others more serious. Understanding what hematuria is and knowing when to seek medical advice can help you manage your health effectively.

What is Hematuria?

Hematuria is the presence of blood in the urine. It can be visible to the naked eye, known as gross hematuria, or only detectable under a microscope, called microscopic hematuria. While the sight of blood in urine can be unsettling, it's important to remember that not all causes of hematuria are serious.

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Why Hematuria Matters

The presence of blood in urine indicates that there might be an issue somewhere in the urinary tract, which includes the kidneys, bladder, ureters, and urethra. Hematuria can be a sign of various conditions, ranging from urinary tract infections (UTIs), kidney stones, and benign prostatic hyperplasia (BPH) to more serious issues like kidney disease or bladder cancer.

Common Causes of Hematuria

  1. Urinary Tract Infections (UTIs): These infections can irritate the bladder, causing blood to appear in the urine.
  2. Kidney Stones: Hard mineral deposits in the kidneys can cause pain and bleeding.
  3. Enlarged Prostate: In men, an enlarged prostate can press against the urethra, leading to hematuria.
  4. Vigorous Exercise: Intense physical activity can sometimes lead to temporary hematuria.
  5. Medications: Certain drugs, such as blood thinners, can cause bleeding in the urinary tract.

Understanding Test Results

When hematuria is detected, your doctor may order additional tests to determine the cause. These can include:

  • Urinalysis: This test examines the urine for red blood cells, bacteria, and other substances.
  • Imaging Tests: Ultrasounds or CT scans can help visualize the urinary tract.
  • Cystoscopy: A procedure that uses a camera to look inside the bladder and urethra.

Frequently Asked Questions

What should I do if I see blood in my urine? If you notice blood in your urine, it's important to consult with a healthcare provider to determine the cause.

Can dehydration cause blood in urine? Dehydration itself doesn't cause hematuria, but it can exacerbate underlying conditions like kidney stones, which may lead to blood in the urine.

Is hematuria always a sign of cancer? No, hematuria is not always indicative of cancer. Many conditions can cause blood in urine, and most are not cancerous.

When to See a Doctor

You should see a doctor if you notice blood in your urine, especially if it is accompanied by other symptoms such as pain, frequent urination, or fever. Even if the blood seems to disappear, it's important to have it evaluated to rule out serious conditions.

Decisions about your health should always be made in consultation with your healthcare provider.

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