AFP Test
A protein produced by the fetal liver. Used as a tumor marker in adults and a screening marker in pregnancy.
What is AFP?
A protein produced by the fetal liver. Used as a tumor marker in adults and a screening marker in pregnancy.
AFP 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 |
|---|---|
| age 18+ | 0.000 – 8.50 ng/mL |
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 AFP result may mean
In non-pregnant adults, can reflect liver cancer or certain testicular/ovarian tumors.
Educational only — not a diagnosis. Many factors can influence a single result. Discuss anything that concerns you with a healthcare provider.
Sources
Related Heart Health biomarkers
Markers commonly tested alongside AFP.
Frequently asked
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