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  1. What Do High or Low Hemoglobin Levels Mean? - Verywell Health

    Dec 12, 2025 · Normal hemoglobin levels differ for men and women, with adult males having 13.8 to 17.2 g/dL and females having 12.1 to 15.1 g/dL. High hemoglobin levels can be caused by …

  2. Hemoglobin (Hgb) Test Results: Typical, Low, and High Levels

    Mar 29, 2024 · Hgb is a protein produced by your bone marrow that’s stored in red blood cells. It helps red blood cells transport oxygen from your lungs to your body through your arteries.

  3. Hemoglobin: Normal, High, Low Levels by Age, Test, Deficiency

    Mar 7, 2024 · Hemoglobin (abbreviated Hgb or Hb) is the protein molecule in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the …

  4. Hemoglobin Test: MedlinePlus Medical Test

    Hemoglobin is an iron-rich protein in your red blood cells. It carries oxygen from your lungs to the rest of your body. Your cells need oxygen to grow, reproduce, and make energy for you to function. Your …

  5. Hemoglobin Test: Normal, High, Low Levels & Results

    Hemoglobin (sometimes abbreviated as Hb) is a complex protein found in red blood cells that contains an iron molecule. The main function of hemoglobin is to carry oxygen from the lungs to the body …

  6. Hemoglobin Test: What It Is, Procedure & Results

    Jul 18, 2022 · Hemoglobin tests are commonly used to diagnose anemia, which involves not having enough hemoglobin or healthy red blood cells. Why is a hemoglobin test done? Your provider may …

  7. What Is HGB and What Do High or Low Levels Mean?

    Jul 20, 2025 · Understand the function of hemoglobin (HGB), the protein in your red blood cells that carries oxygen and impacts your overall well-being and energy.

  8. Hgb test: What it is, results, and more - Medical News Today

    Sep 13, 2023 · An Hgb blood test measures a person's hemoglobin levels. Learn more about the test, including the results and the causes of high and low hemoglobin levels.

  9. Normal Hemoglobin Levels by Age and Gender: What’s Healthy?

    Dec 17, 2025 · Normal hemoglobin levels by age and gender, what’s healthy, and when low or high hemoglobin levels need medical attention. Learn when to see a doctor.

  10. Hemoglobin test - Mayo Clinic

    Apr 12, 2024 · Hemoglobin carries oxygen to the body's organs and tissues when you breathe in. Then it carries the waste gas carbon dioxide back to the lungs to be breathed out. If a hemoglobin test …