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  1. 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.

  2. 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 …

  3. 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 …

  4. Hematocrit test - Mayo Clinic

    Results Results from your hematocrit test are reported as the percentage of blood cells that are red blood cells. Typical ranges vary substantially with race, age and sex. The definition of …

  5. 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.

  6. 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 …

  7. Prediabetes - Diagnosis and treatment - Mayo Clinic

    Nov 11, 2023 · The ranges of blood sugar level considered normal, prediabetes and diabetes are the same for children and adults.

  8. High blood pressure (hypertension) - Symptoms & causes - Mayo …

    Feb 29, 2024 · High blood pressure is a common condition that affects the body's arteries. It's also called hypertension. If you have high blood pressure, the force of the blood pushing …

  9. Cholesterol ratio or non-HDL cholesterol: Which is most important?

    Jan 12, 2024 · An optimal level of non- HDL cholesterol for most people is less than 130 milligrams per deciliter (mg/dL), which is 3.37 millimoles per liter (mmol/L). For people with a …

  10. 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.