Prolactin
Prolactin is a pituitary hormone that stimulates milk production during and after pregnancy and modulates reproductive function. Elevated levels outside pregnancy suppress GnRH and cause irregular periods, infertility, galactorrhea, and reduced libido, and are often from pituitary adenomas (prolactinomas), medications (especially antipsychotics), hypothyroidism, or stress.
Optimal range: who says what
No institution or named practitioner we track states an optimal target for Prolactin. How we verify ranges.
- No stated targetNo separate optimal establishedPersistent elevation suppresses reproductive hormones; stress, sleep and some drugs raise it transiently
- Lab reference interval2-29 ng/mL (non-pregnant women), 10-209 ng/mL (pregnant women)What a lab report flags against. A lab interval is not an optimal target.
11 of 21 itemized panels
Sex Hormones (Female)
Why Prolactin matters
Elevated levels suppress ovulation and cause irregular periods. High prolactin causes infertility and may indicate pituitary tumor.
Which Providers Test Prolactin?
Cheapest: Mito Health at $297/year. Most comprehensive: Function Health, 160+ biomarkers for $365/year.
11 panels that include it, cheapest first
| Provider | Annual Cost | Total Biomarkers | $/Biomarker |
|---|---|---|---|
| $297 | 100+ | $2.97 | |
 Superpower | $349 | 100+ | $3.49 |
| $349 | 75+ | $4.65 | |
 Function Health | $365 | 160+ | $2.28 |
| $365 | 100+ | $3.65 | |
| $495 | 80+ | $6.19 | |
| $499 | 100+ | $4.99 | |
| $895 | 100+ | $8.95 | |
| $996 | 59 | $16.88 | |
| $1188 | 70+ | $16.97 | |
| $1950 | 130+ | $15.00 |
$/Biomarker is annual cost divided by the panel's advertised biomarker count, not the price of this one test. We track 23 blood test providers (32 plans); 21 of those plans are itemized marker by marker. Compare all of them.
10 itemized panels do not include Prolactin
WHOOP Advanced Labs · Labcorp OnDemand · Life Extension Elite · Everlywell · InsideTracker · Marek Health Base · Empirical Health · Oura Health Panels · Vitality Blueprint Standard · Vitality Blueprint Elite
11 providers not itemized in our matrix
We have not itemized these marker by marker (some sell tests one at a time), so this page cannot say whether they offer Prolactin. Check with them directly.
Life Extension Standard · Quest Health · Ultrahuman Blood Vision · Lifeforce · Hundred Health · Personalabs · Walk-In Lab · HealthLabs · WHOOP Specialized Panels · Marek Health Essential · Vitality Blueprint Upload
Experts discussing Prolactin
Podcast episodes where clinicians and researchers cover this marker in depth. Curated by hand; an episode is listed only when the marker is a substantial topic, not a passing mention.
- Female Hormone Health, PCOS, Endometriosis, Fertility & Breast Cancer | Dr. Thaïs AliabadiDisclosure: Huberman Lab has been sponsored by Function Health, which appears in our blood-test comparisons.
Frequently Asked Questions
What is the optimal range for Prolactin?
No separate optimal established: Persistent elevation suppresses reproductive hormones; stress, sleep and some drugs raise it transiently. Lab reference interval: 2-29 ng/mL (non-pregnant women), 10-209 ng/mL (pregnant women). That is what a lab report flags against, not an optimal target.
Which blood test providers include Prolactin?
11 of the 21 blood testing panels we itemize marker by marker include Prolactin in their panels. This biomarker is widely available across major providers.
Related: YouBoost rates lifestyle and supplement interventions by evidence; HRV Zone tracks recovery trends.
Medical Disclaimer
This information is for educational purposes only and is not medical advice. Always consult with a qualified healthcare provider about your specific health needs.
Last reviewed Sep 23, 2026 · First published Sep 30, 2025