A Prolactin test measures the level of prolactin, a hormone produced by the pituitary gland. While best known for stimulating milk production, prolactin affects reproductive function in both men and women.
What This Test Measures
Prolactin:
A hormone that promotes breast development and milk production during and after pregnancy. In non-pregnant individuals, elevated prolactin can suppress reproductive hormones and cause various symptoms.
Reference Ranges
Non-pregnant Women: 4-23 ng/mL
Pregnant Women: 34-386 ng/mL
Men: 4-15 ng/mL
Ranges vary by laboratory. Mildly elevated levels may need repeat testing, as stress and other factors can temporarily raise prolactin.
Who Should Consider This Test
Women:
• Irregular or absent menstrual periods
• Infertility
• Nipple discharge when not pregnant or nursing
• Low libido
• Symptoms of low estrogen
Men:
• Erectile dysfunction
• Low libido
• Infertility
• Gynecomastia (breast tissue enlargement)
• Symptoms of low testosterone
Both sexes:
• Visual disturbances or headaches (may indicate pituitary tumor)
• Evaluation of pituitary function
• Monitoring medications that affect prolactin (certain antipsychotics, antidepressants, blood pressure medications)
Why Prolactin Matters
Elevated prolactin (hyperprolactinemia) can:
• Suppress LH and FSH, reducing testosterone and estrogen production
• Cause infertility in both men and women
• Indicate a pituitary adenoma (usually benign prolactin-secreting tumor)
• Be a side effect of certain medications
How It Works
1. Order your test online – no doctor visit required
2. Visit any Quest Diagnostics location nationwide
3. Simple blood draw takes approximately 5 minutes
4. Results delivered to your secure portal within 1-2 business days
Preparation
For most accurate results:
• Test in the morning (prolactin has a circadian rhythm)
• Avoid breast stimulation before testing
• Avoid strenuous exercise the day before
• Minimize stress before the blood draw
Related Tests to Consider
• Testosterone – Prolactin affects testosterone production
• LH and FSH – Affected by elevated prolactin
• Estradiol – Affected by elevated prolactin
• Thyroid Panel – Hypothyroidism can elevate prolactin
Why Choose Wittmer Rejuvenation Clinic
At $30, our Prolactin test is competitively priced. As a hormone replacement therapy clinic, we understand prolactin’s impact on reproductive hormones. We partner with Quest Diagnostics for reliable, CLIA-certified laboratory testing with convenient locations across all 50 states.
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