What is the normal adult hemoglobin range for males?

• A. 12-14 g/dL
• B. 13.5-17.5 g/dL
• C. 11-15 g/dL
• D. 14-18 g/dL

Answer: (B)

Hemoglobin reflects the blood’s capacity to carry oxygen. For adult men, the normal range is generally about 13.5 to 17.5 g/dL. This aligns with standard reference values used in most clinical labs, though some sources may show a slightly narrower or broader span (roughly 13.8–17.2 g/dL). Values below this range suggest anemia, while values above can indicate other conditions or factors like polycythemia or high altitude. The range 13.5–17.5 g/dL best matches typical adult male reference values.