Hemoglobin Test
The protein in red blood cells that carries oxygen from your lungs to the rest of your body.
What is Hemoglobin?
The protein in red blood cells that carries oxygen from your lungs to the rest of your body.
Hemoglobin Reference Range
These are the typical adult reference ranges used by major US labs. Your report will include the specific range used by the lab that processed your sample.
| Population | Range |
|---|---|
| Male, age 18+ | 13.5 – 17.5 g/dL |
| Female, age 18+ | 12.0 – 15.5 g/dL |
Reference ranges are educational. Always interpret your result with the specific range printed on your lab report and discuss anything outside the range with a clinician.
What your Hemoglobin result may mean
Often reflects dehydration, smoking, or living at high altitude. In rare cases it can signal a blood disorder.
Commonly associated with anemia from iron deficiency, blood loss, chronic disease, or certain vitamin deficiencies.
Educational only — not a diagnosis. Many factors can influence a single result. Discuss anything that concerns you with a healthcare provider.
Sources
Related Blood Health biomarkers
Markers commonly tested alongside Hemoglobin.
Frequently asked
No. TestWell's licensed physician network reviews and approves your order — usually within minutes. You can place an order online without an in-person visit or a referral from your own doctor.
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