Interpret Your Hemoglobin Results
Enter your Hgb value below and get an instant, free AI interpretation — a plain-English explanation checked against WHO/IFCC reference ranges.
Medical Disclaimer
This AI-generated interpretation is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Results may vary based on individual health factors not captured here.
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Hemoglobin Normal Ranges
Hemoglobin (Hgb) is the iron-containing protein in red blood cells responsible for carrying oxygen from the lungs to body tissues and returning carbon dioxide to the lungs.
| Age Group | Sex | Reference Range | Unit | Notes |
|---|---|---|---|---|
| Adults (18–64) | Male | 13.5 – 17.5 | g/dL | — |
| Adults (18–64) | Female | 12 – 15.5 | g/dL | — |
| All ages | Female | 11 – 14 | g/dL | Pregnancy |
| Children / Pediatric | All | 11 – 16 | g/dL | Age 6 months–12 years (approximate) |
Also reported in: g/L, mmol/L.
Critical (Panic) Values
Critical Low: < 7 g/dL. Critical High: > 20 g/dL. Values outside these limits require immediate clinical attention.
Common Causes of High Hgb
Common Causes of Low Hgb
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