
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. …
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 …
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.
Paget's disease of the breast - Symptoms & causes - Mayo Clinic
Sep 12, 2025 · This rare form of breast cancer causes breast skin changes. Learn about the symptoms, causes, diagnosis and treatments, including surgery.
Mucus in stool: A concern? - Mayo Clinic
May 30, 2024 · Larger amounts of mucus in stool, associated with diarrhea, may be caused by certain intestinal infections. Bloody mucus in stool or mucus along with belly pain may signal a …
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 …
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 …
New FDA-approved blood tests for diagnosing Alzheimer's disease
Jul 8, 2025 · A simple blood test done in a doctor's office can help to diagnose Alzheimer's disease. Find out who can have the test, and how accurate results are.
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 · Bacteria, yeast or parasites can indicate an infection. Casts — tube-shaped proteins — can be a result of kidney disorders. Crystals that form from chemicals in urine …