Hematology

Hemoglobin

Normal Range
Male: 13.5-17.5 g/dL; Female: 12.0-15.5 g/dL
Sample Type
Standard
Fasting
No
Unit
g/dL

Hemoglobin (Hb) is the iron-containing protein in red blood cells that transports oxygen from the lungs to the tissues. In a Hemoglobin/CBC Panel, it is the primary metric for diagnosing anemia. It provides a more direct measure of the blood's oxygen-carrying capacity than a simple red cell count.

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Interactive
g/dL

Enter your lab result to see where you stand compared to the standard reference range.

Why Context Matters

Hb levels are affected by plasma volume. In pregnancy or heart failure (fluid overload), Hb may appear low (dilutional anemia). Conversely, smokers or individuals living at high altitudes naturally have higher Hb levels as a compensatory mechanism for lower oxygen tension.

Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.

Clinical References

Source-of-truth databases and clinical guidelines for Hemoglobin:

Research & Guidelines

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DR

Medically Reviewed by Dr. Binoy Babu, MBBS

Board Certified Doctor • 10+ Years Clinical Experience

Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.

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