Blood in Urine (Hematuria): Key Blood Markers to Check

Explore the key blood markers to check when experiencing blood in urine, a condition known as hematuria, and understand when to consult a doctor.

Sep 18, 2026 2 min read

Blood in urine, also known as hematuria, can be a concerning symptom. It may be visible to the naked eye (gross hematuria) or only detectable under a microscope (microscopic hematuria). Understanding the potential causes and related blood markers can help you and your healthcare provider determine the underlying issue.

What is Hematuria?

Hematuria is the presence of red blood cells in the urine. It can result from various conditions ranging from benign to serious. Some common causes include urinary tract infections (UTIs), kidney stones, trauma, or more serious conditions like kidney disease or cancer. Hematuria itself is not a disease but a symptom of an underlying condition.

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Key Blood Markers to Check

When experiencing hematuria, certain blood tests may be recommended to help identify the cause:

  • Complete Blood Count (CBC): This test measures different components of your blood, including red and white blood cells and platelets. It can help identify anemia or infection, which may be related to hematuria.
  • Serum Creatinine: This marker measures kidney function. Elevated levels can indicate kidney damage or disease, which may be associated with hematuria.
  • Blood Urea Nitrogen (BUN): Like creatinine, BUN is another indicator of kidney function. High levels may suggest kidney problems that could cause blood in the urine.
  • Coagulation Profile: This test assesses how well your blood clots. Abnormal clotting can lead to bleeding, including hematuria.

Why These Markers Matter

Blood markers provide valuable information about your overall health and help pinpoint potential issues. For instance, if your kidney function tests (creatinine and BUN) are abnormal, it may suggest kidney disease as the cause of hematuria. Similarly, a CBC can reveal signs of infection or anemia, guiding further investigations.

Frequently Asked Questions

What should I do if I notice blood in my urine? If you notice blood in your urine, it's important to consult a healthcare provider. They can guide you on the necessary tests and potential next steps.

Can dehydration cause blood in urine? Dehydration itself is unlikely to cause hematuria, but it can contribute to conditions like kidney stones, which may result in blood in the urine.

Is hematuria always a sign of cancer? No, hematuria is not always a sign of cancer. It can be caused by a variety of conditions, many of which are not cancerous.

Can medications cause hematuria? Yes, certain medications, such as blood thinners, can cause hematuria as a side effect.

What lifestyle changes can help prevent hematuria? Staying hydrated, maintaining a healthy diet, and avoiding excessive use of medications like NSAIDs can help prevent conditions that may lead to hematuria.

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 like pain, frequent urination, or fever. Early evaluation can help identify the cause and prevent potential complications.

Remember, this information is for educational purposes and any decisions should be made in consultation with your healthcare provider.

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