Prolactin
- Sample Type
- Standard
- Fasting
- No
- Unit
- ng/mL
Prolactin is a peptide hormone produced by the anterior pituitary gland, primarily responsible for inducing and maintaining lactation. In non-pregnant individuals, it helps regulate the reproductive system. Abnormal levels can disrupt the secretion of Gonadotropin-Releasing Hormone (GnRH), leading to infertility, irregular menstrual cycles in women, and erectile dysfunction or gynecomastia in men. Within this panel, it is evaluated alongside thyroid and other pituitary hormones to pinpoint the cause of endocrine dysfunction.
Check Your Result
Check Your Result
Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
Prolactin is highly sensitive to physical and emotional stress; even the stress of a needle prick can cause a temporary spike. 'Macroprolactinemia' is a condition where prolactin forms large, inactive complexes that are detected by the assay but have no clinical effect, potentially leading to misdiagnosis of a pituitary tumor.
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Clinical References
Source-of-truth databases and clinical guidelines for Prolactin:
Official Sources
- Prolactin Levels: MedlinePlus Medical TestMedlinePlus
- Prolactin Blood Test (PRL) - Testing.comTesting.com
Research & Guidelines
- PubMed: Prolactin Clinical GuidelinesNCBI / PubMed
Related Indicators
Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
Get Notified When Dr. Babu Is Available