Prolactin is famously known as the "milk hormone." Its primary biological role is to stimulate breast milk production (lactation) after childbirth and temporarily suppress ovulation so that a nursing mother doesn't immediately become pregnant again. It is nature’s built-in contraceptive.
But what happens when Prolactin surges in a woman who isn't pregnant or nursing? Or in a man? When Prolactin levels spike abnormally—a condition called Hyperprolactinemia—it throws your entire reproductive axis into chaos. A simple Serum Prolactin Test is a frontline investigation for unexplained infertility, missed periods, and low sexual vitality.
Symptoms of High Prolactin
In Women:
- Oligomenorrhea or Amenorrhea: Irregular cycles, unusually light periods, or periods that stop completely for months.
- Galactorrhea: Unexplained clear or milky discharge from one or both nipples when not pregnant.
- Unexplained Infertility: High prolactin blocks the pituitary gland from releasing LH and FSH, stopping ovulation entirely.
In Men:
- Erectile Dysfunction & Low Libido: Prolactin suppresses testosterone production.
- Gynecomastia: Enlargement of male breast tissue and tenderness.
- Chronic Fatigue & Muscle Loss: Feeling perpetually lethargic.
The Critical Testing Rule: Avoid Morning Stress!
Prolactin is extraordinarily sensitive to physical and psychological stress. Even rushing in Delhi traffic or having a heated argument before your blood draw can cause a temporary spike! To get an accurate reading:
- Test 2 to 3 hours after waking up (prolactin peaks naturally during deep sleep).
- Rest quietly for 15 to 20 minutes before the blood collection.
- Avoid sexual intercourse or breast stimulation for 24 hours prior to testing.
| Group | Normal Prolactin Range (ng/mL) |
|---|---|
| Non-Pregnant Women | 4.8 to 23.3 ng/mL |
| Pregnant Women | 34 to 386 ng/mL |
| Men | 4.0 to 15.2 ng/mL |
| Prolactinoma Suspicion | Above 100 to 200+ ng/mL (Requires brain MRI) |
BookMyPatho makes hormone testing peaceful and stress-free by collecting your sample in the calm comfort of your living room across Delhi NCR.
Recommended Lab Tests & Packages to Book at Home
If you or a loved one are experiencing these symptoms, you can book these diagnostic tests directly with BookMyPatho. Our trained phlebotomists collect samples from your doorstep across Delhi NCR with digital reports delivered within 12 hours:
- Serum Prolactin Test: Evaluates pituitary hormone excess causing missed periods, galactorrhea, or male fatigue.
- Thyroid Stimulating Hormone (TSH): Elevated TRH in hypothyroidism frequently triggers secondary high prolactin.
- Total Testosterone & DHEA-S: Assesses concurrent androgenic hormone balance.
Have questions or need assistance selecting the right package? Call or WhatsApp our Delhi NCR health desk at +91-8700227153.
