Quick Facts
- Sample: Blood
- Fasting: No special preparation is required
- Turnaround: 1-2 days (may take longer based on weather, holiday, or lab delays)
What This Test Measures
This test measures the level of prolactin (PRL) in your blood. Prolactin is a hormone produced by the pituitary gland, and this test reports it as a directly measured circulating hormone level, not a calculated value.
Prolactin plays a role in developing certain female physical features and reproductive functions, including breast growth and breast milk production. Its normal function in men or anyone with testes is currently unknown. This test measures only prolactin and does not include any other hormones, binding proteins, or calculated values.
Benefits
- Measures your circulating prolactin level from a blood sample
- Helps screen for a pituitary tumor called prolactinoma
- Supports evaluation of menstrual irregularities or infertility
- Supports evaluation of low sex drive or erectile dysfunction
- Requires no special preparation before testing
Who Is This Test For?
- Women experiencing menstrual irregularities
- Women experiencing infertility
- Men experiencing low sex drive
- Men experiencing erectile dysfunction
- Individuals with symptoms like unexpected breast milk production or nipple discharge
- Individuals with symptoms such as headaches or vision problems that may relate to a pituitary tumor
How It Works
- Order Your Test Online
- Visit a Local Lab
- Get Results Online
FAQ
1. What is the purpose of this hormone test?
This test measures the level of prolactin, a hormone produced by the pituitary gland, in your blood. It helps a healthcare provider screen for a pituitary tumour called prolactinoma. This test reports a directly measured circulating hormone level and does not diagnose a condition on its own. It is intended to support a broader evaluation by your healthcare provider.
2. Who would benefit from this test, and when should I order it?
This test may be appropriate for women experiencing menstrual irregularities or infertility, and for men experiencing low sex drive or erectile dysfunction. It may also be considered by individuals with unexpected breast milk production, nipple discharge, breast tenderness, fatigue, headaches, vision problems, or muscle pain. A healthcare provider can help determine whether this test fits your specific situation and evaluate these symptoms.
3. How does this test differ from other hormone tests?
This test specifically measures prolactin as a directly measured circulating value. It does not measure other pituitary hormones, thyroid hormones, or reproductive hormones. While conditions such as hypothyroidism or liver disease may also affect prolactin levels, this test reports prolactin alone and does not evaluate those conditions directly.
4. Do I need to fast before this test?
No special preparation is required for this test.
5. How quickly will I get results?
Results are typically available in 1–2 days. This may take longer based on weather, holidays, or lab delays.
6. How do I interpret the results?
The meaning of your prolactin result depends on your individual symptoms, medical history, sex, and other factors, including whether you are pregnant. Prolactin levels are naturally higher in pregnant women and new mothers. Your healthcare provider may also consider related information, such as thyroid function or liver health, when interpreting your result. One abnormal result does not automatically confirm a hormonal condition, and one normal result does not rule one out.
Disclaimer: Reference ranges may vary by laboratory. Listed ranges are general guidelines and may differ from those used by the performing lab. Always consult your healthcare provider for interpretation.
7. What should I do if my results are abnormal?
If your results fall outside the expected range, review them with a qualified healthcare provider. They can determine whether additional evaluation is needed.
8. How often should I get tested?
How often you should be tested depends on your individual health situation. Follow the guidance of your healthcare provider regarding retesting or ongoing monitoring.
Pre test preparation
No special preparation is required.
