The normal hemoglobin range varies depending on age and sex. Different labs may also have slightly different reference ranges. It's crucial to consult your doctor to interpret your individual results within the context of your overall health.
Hemoglobin Ranges for Adults:
Several sources provide slightly varying ranges. Below is a summary based on the provided references:
- Men:
- 13.2 to 16.6 g/dL (grams per deciliter) [Mayo Clinic]
- 14.0 to 17.5 g/dL [Cleveland Clinic, other sources]
- 13.5 to 17.5 g/dL [Red Cross]
- Women:
- 11.6 to 15 g/dL [Mayo Clinic]
- 12.3 to 15.3 g/dL [Cleveland Clinic, other sources]
Hemoglobin Ranges for Infants and Newborns:
Hemoglobin levels are significantly higher in newborns and infants due to rapid growth and development:
- Newborns: 14 to 24 g/dL (or 140 to 240 g/L) [Mount Sinai, UCSF Health]
- Infants: 9.5 to 13 g/dL (or 95 to 130 g/L) [Mount Sinai, UCSF Health]
Understanding Hemoglobin Levels:
Hemoglobin is a protein in red blood cells that carries oxygen throughout the body. Low hemoglobin (anemia) can indicate various health issues, while high hemoglobin can also signify potential problems. Accurate interpretation requires a medical professional's assessment.
It's important to note that the wide range of normal hemoglobin levels reflects individual variations and the methodologies used for measurement. Small variations outside a specific range do not always indicate a problem.
