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  1. Creatinine test - Mayo Clinic

    Jun 12, 2025 · Overview A creatinine test is a measure of how well the kidneys are doing their job of filtering waste from the blood. Creatinine is a chemical compound left over from energy-making …

  2. Heart rate: What's normal? - Mayo Clinic

    Oct 22, 2025 · A normal resting heart rate for adults ranges from 60 to 100 beats per minute. A heart rate above or below that may signal a health condition.

  3. Ejection fraction: An important heart test - Mayo Clinic

    Jan 29, 2025 · Ejection fraction is a measurement of the percentage of blood leaving the heart each time it squeezes. When the heart squeezes, it's called a contraction. Ejection fraction is just one of many …

  4. Ferritin test - Mayo Clinic

    Dec 19, 2023 · Overview A ferritin test measures the amount of ferritin in the blood. Ferritin is a blood protein that contains iron. This test can be used to find out how much iron the body stores. If a ferritin …

  5. Triglycerides: Why do they matter? - Mayo Clinic

    If you've been keeping an eye on your blood pressure and cholesterol levels, there's something else you might need to monitor: your triglycerides. Having a high level of triglycerides in your blood can …

  6. Menstrual cycle: What's normal, what's not - Mayo Clinic

    Apr 22, 2023 · Learn about how to track your menstrual cycles and what any changes may mean.

  7. Aging: What to expect - Mayo Clinic

    Nov 1, 2024 · Aging: What to expect Wonder what's considered a natural part of the aging process? Here's what to expect as you get older — and what you can do about it. By Mayo Clinic Staff

  8. 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.

  9. Enlarged spleen (splenomegaly) - Diagnosis and treatment - Mayo Clinic

    Aug 25, 2023 · An enlarged spleen is usually detected during a physical exam. Your doctor can often feel it by gently examining your left upper belly. However, in some people — especially those who …

  10. Mental health: Know when to get help - Mayo Clinic

    Mental health is the overall wellness of how you think, behave and manage your feelings. A mental health condition may be present when patterns or changes in thinking, feeling, or behaving cause …