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

    Mar 7, 2024 · Read about hemoglobin lab values, normal range, blood test, and high and low values. Learn what normal, low, and high levels of hemoglobin mean. Also learn about defective hemoglobin, …

  2. 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 …

  3. Hemoglobin test - Mayo Clinic

    Apr 12, 2024 · If your hemoglobin level is below or above the healthy range, your healthcare team determines what steps to take. Your healthcare professional might double-check the hemoglobin test …

  4. Normal Hemoglobin Levels and Ranges for Female, Children, and Males

    Jan 6, 2020 · Normal hemoglobin levels can vary based on several factors, including age and sex assigned at birth. Learn more about the normal hemoglobin ranges for adults, children, and infants.

  5. 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.

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

    Hemoglobin (Hbg) measures the amount of the hemoglobin molecule in a volume of blood and normally is 13.8 to 17.2 grams per deciliter (g/dL) for men and 12.1 to 15.1 g/dL for women.

  7. Understanding Normal, Low, and High Hemoglobin Levels

    Hemoglobin test results are typically measured in grams per deciliter (g/dL). Normal levels vary depending on factors such as age, gender, and overall health. For example, the normal hemoglobin …

  8. Hemoglobin Concentration (Hb): Reference Range, Interpretation ...

    Nov 4, 2025 · Levels < 110 g/L in the first trimester and <105 g/L in later trimesters suggest iron deficiency anemia. [3] The reference ranges for hemoglobin concentration in adults are as follows: …

  9. Hemoglobin Levels and Their Health Implications

    Aug 13, 2025 · Hemoglobin levels vary depending on age, sex, and overall health. Generally, the normal ranges are: If your hemoglobin is outside these ranges, it may indicate an underlying health issue. …

  10. Hemoglobin: Normal, High, and Low Levels by Age

    Hemoglobin levels vary by age and gender—typically 13.8–17.2 g/dL for adult males and 12.1–15.1 g/dL for adult females—and levels that are too low indicate anemia, while high levels may signal …