Prolactin, Serum – P0017
Test Overview
The Prolactin, Serum Test measures the level of prolactin hormone in the blood. Prolactin is produced by the pituitary gland and plays a vital role in regulating reproductive health, especially in lactation (milk production), menstrual cycles, and fertility in women, as well as hormonal balance in men.
Abnormal prolactin levels can indicate underlying endocrine disorders, pituitary gland abnormalities, or reproductive issues.
Why This Test is Important
- Helps diagnose causes of irregular menstrual cycles
- Evaluates infertility issues in both men and women
- Detects pituitary gland disorders such as prolactinoma
- Assesses unexplained milk discharge (galactorrhea)
- Helps identify low testosterone levels in men
- Monitors ongoing treatment for prolactin-related conditions
Who Should Take This Test?
- Women with missed or irregular periods
- Couples facing difficulty in conception
- Individuals with unexplained breast milk secretion
- Men with reduced libido or erectile dysfunction
- Patients suspected of pituitary tumors or hormonal imbalance
Test Preparation
- Fasting is not mandatory, but may be recommended in some cases
- Avoid stress and heavy exercise before the test
- Inform your doctor about medications like hormones, antidepressants, or antipsychotics, as they may affect results
- Ideally, blood sample is collected in the morning, as prolactin levels fluctuate during the day
Sample Type
Normal Reference Range (may vary slightly by lab)
-
Men: 2 – 18 ng/mL
-
Women (non-pregnant): 2 – 29 ng/mL
-
Pregnant women: Higher levels are normal
Interpretation of Results
High Prolactin Levels May Indicate:
- Pituitary tumors (prolactinoma)
- Hypothyroidism
- Chronic stress
- Kidney disease
- Certain medications
Low Prolactin Levels May Indicate:
- Pituitary gland dysfunction
- Dopamine-related disorders
Key Benefits
✔ Early detection of hormonal imbalance
✔ Supports fertility evaluation and treatment
✔ Helps diagnose pituitary disorders
✔ Assists in monitoring ongoing hormonal therapy
✔ Quick and reliable diagnostic insight
When Will You Get Results?
- Typically available within 24–48 hours
Additional Information
- This test is often recommended along with other hormone tests like FSH, LH, and TSH for a complete hormonal profile
- Results should always be interpreted by a qualified healthcare professional
What You Receive
- Accurate prolactin level measurement
- Reliable lab-certified report
- Doctor-ready diagnostic insights
Safety & Care
- Minimal risk involved (simple blood draw)
- Conducted under sterile and safe laboratory conditions
FAQs
1. Is fasting required for the Prolactin test?
No, fasting is usually not required unless specified by your doctor.
2. Can stress affect prolactin levels?
Yes, stress can temporarily increase prolactin levels.
3. Is this test useful for men?
Yes, it helps evaluate hormonal imbalance, low libido, and fertility issues in men.
4. What happens if prolactin levels are high?
Further tests may be recommended to identify the underlying cause such as pituitary disorders.
5. Can medications affect prolactin levels?
Yes, certain medications like antidepressants and hormonal drugs can impact results.
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