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  1. Stool color: When to worry - Mayo Clinic

    Oct 10, 2024 · Stool comes in a range of colors. All shades of brown and even green are considered typical. Only rarely does stool color indicate a possibly serious intestinal condition. Stool color is …

  2. Blood urea nitrogen (BUN) test - Mayo Clinic

    Aug 5, 2023 · Learn about the blood urea nitrogen (BUN) test to assess kidney function and what possible results could mean.

  3. Bilirubin test - Mayo Clinic

    Nov 9, 2024 · Overview A bilirubin test checks liver health by measuring the levels of bilirubin in the blood. Bilirubin is a substance produced by the breakdown of red blood cells. Bilirubin (bil-ih-ROO …

  4. Hematocrit test - Mayo Clinic

    Why it's done A hematocrit test can help your health care team make a diagnosis or monitor how you respond to a treatment. The test is done as part of a complete blood count (CBC). When the …

  5. CA 125 test - Mayo Clinic

    Mar 7, 2025 · A rising level may indicate a return or continued growth of the cancer. A number of conditions that aren't cancerous can cause an elevated CA 125 level, including: Endometriosis. Liver …

  6. 7 fingernail problems not to ignore - Mayo Clinic

    Jun 30, 2023 · Did you know that your fingernails can provide important information about your health? Read on to learn about how changes in the way your fingernails look could signal medical concerns …

  7. Urine color - Symptoms and causes - Mayo Clinic

    Oct 11, 2025 · Overview Regular urine color ranges from clear to pale yellow. But certain things can change the color. Foods such as beets, blackberries and fava beans can turn urine pink or red, for …

  8. Low blood pressure (hypotension) - Symptoms and causes

    Jun 13, 2024 · What's considered low blood pressure for one person might be OK for someone else though. Low blood pressure might cause no symptoms that you notice. Or it might cause dizziness …

  9. Sexually transmitted disease (STD) symptoms - Mayo Clinic

    Mar 12, 2024 · Sexually transmitted diseases are infections spread mainly by contact with genitals or bodily fluids. Also called STDs, STIs or venereal disease, sexually transmitted infections are caused …

  10. Swollen lymph nodes - Symptoms & causes - Mayo Clinic

    Apr 25, 2025 · Swollen lymph nodes most often happen because of infection from bacteria or viruses. Rarely, cancer causes swollen lymph nodes. The lymph nodes, also called lymph glands, play a vital …