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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 …

  2. 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 …

  3. Blood pressure: Does it have a daily pattern? - Mayo Clinic

    May 22, 2024 · Does blood pressure have a daily pattern? I've noticed that my blood pressure is always lower in the morning than in the afternoon.

  4. Hyponatremia - Symptoms and causes - Mayo Clinic

    Jul 18, 2025 · Hyponatremia is the term used when your blood sodium is too low. Learn about symptoms, causes and treatment of this potentially dangerous condition.

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

    Feb 29, 2024 · Most people with high blood pressure have no symptoms, even if blood pressure readings reach dangerously high levels. You can have high blood pressure for years without …

  6. Hematocrit test - Mayo Clinic

    The blood sample is generally drawn with a needle from a vein in your arm. You may feel some tenderness at the site, but you'll be able to resume normal activities afterward. Results Results …

  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 …

  8. Blood pressure chart: What your reading means - Mayo Clinic

    Feb 28, 2024 · Ideal blood pressure is categorized as normal. Increased blood pressure may be categorized as elevated, stage 1 or stage 2 depending on the specific numbers. A diagnosis of …

  9. 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 …

  10. Hemoglobin test - Mayo Clinic

    Apr 12, 2024 · Overview A hemoglobin test is a blood test. It measures the amount of a protein in red blood cells called hemoglobin. Hemoglobin carries oxygen to the body's organs and …