
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. …
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.
Hematocrit test - Mayo Clinic
When the hematocrit value is high, the proportion of red blood cells in the blood is higher than normal. This can indicate:
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 …
Paget's disease of the breast - Symptoms & causes - Mayo Clinic
Sep 12, 2025 · Overview Paget's disease of the breast is a rare form of breast cancer that affects the nipple. Paget's disease of the breast often causes scaly or crusty skin on the nipple. The …
Mayo Clinic Minute: Fingernails are clues to your health
Mar 13, 2024 · Vivien Willliams: Your fingernails are clues to your overall health. Many people develop lines or ridges from the cuticle to the tip. Rachel Miest, M.D., Department of …
Alanine aminotransferase (ALT) blood test - Mayo Clinic
Jun 3, 2025 · Overview An alanine aminotransferase test, also called an ALT test, is a blood test to check the health of your liver. ALT is a substance found mostly in the liver. If your liver is …
Protein in urine (proteinuria) Causes - Mayo Clinic
Mar 20, 2025 · Your kidneys filter waste products from your blood while keeping what your body needs — including proteins. However, some diseases and conditions allow proteins to pass …
PSA test - Mayo Clinic
Apr 30, 2025 · PSA is mostly found in semen, which also is produced in the prostate. Small amounts of PSA ordinarily circulate in the blood. The PSA test can detect high levels of PSA …
Urinalysis - Mayo Clinic
Oct 24, 2023 · Bilirubin in your urine might indicate liver damage or disease. Evidence of infection. Either nitrites or leukocyte esterase — a product of white blood cells — in your urine might …