Prolactin Test
A pituitary hormone primarily involved in milk production. Also affects menstrual function and fertility.
What is Prolactin?
A pituitary hormone primarily involved in milk production. Also affects menstrual function and fertility.
Prolactin 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+ | 4.00 – 15.2 ng/mL |
| Female, age 18+ | 4.80 – 23.3 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 Prolactin result may mean
Can reflect pituitary issues, certain medications, hypothyroidism, or stress. May affect fertility and cycles.
Educational only — not a diagnosis. Many factors can influence a single result. Discuss anything that concerns you with a healthcare provider.
Sources
Related Hormones biomarkers
Markers commonly tested alongside Prolactin.
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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