What Do Elevated Results Mean?

High prolactin levels may indicate hyperprolactinemia, which can result from pituitary tumors, polycystic ovary syndrome (PCOS), or hypothyroidism.

Is It Necessary to Repeat the Test?

In some cases, the test may be repeated to obtain an accurate result, as prolactin levels can fluctuate throughout the day.

Are There Special Preparations Before the Test?

Fasting for a few hours is preferred, and it is advised to avoid stress and physical exertion the day before the test.

What Are the Next Steps if Results Are Abnormal?

If results are abnormal, the doctor will perform additional tests to determine the exact cause and initiate appropriate treatment if needed.

Medical Laboratories

Prolactin (Milk Hormone) Test

A test measuring prolactin levels to diagnose pituitary disorders and fertility issues, helping regulate vital and reproductive functions for both men and women effectively.

Trusted medical contentUpdated: 25-04-2026Views: 55LHL-87

About this service

Prolactin Test (Prolactin). This test measures the level of prolactin hormone in the blood, which is primarily produced by the pituitary gland. This hormone plays a vital role in regulating various biological functions, including stimulating breast milk production after childbirth and affecting the menstrual cycle and female fertility. The test is usually performed when symptoms such as menstrual irregularities, infertility, or abnormal breast discharge are present. Elevated prolactin levels may indicate conditions such as pituitary tumors, polycystic ovary syndrome (PCOS), or other disorders affecting the pituitary gland. Overall, the prolactin test is an important tool for diagnosing and monitoring hormonal disorders, helping doctors determine the most appropriate treatment for patients.

Test purpose

Hyperprolactinemia: Elevated prolactin levels may indicate a problem with the pituitary gland or the presence of pituitary tumors.
Menstrual disorders: High prolactin levels can reveal causes of irregular or absent menstrual cycles.
Infertility: Elevated prolactin can affect reproductive ability in both women and men, warranting evaluation of hormone levels.
Abnormal breast discharge: The test may be performed if there is unexplained nipple discharge in women or men.
Other medical conditions: The test can also detect issues such as polycystic ovary syndrome (PCOS) or chronic conditions like hypothyroidism.
Monitoring treatment effectiveness: Prolactin levels are tracked to assess the impact of treatments, particularly in cases of pituitary tumors.

Recommended groups

Women with menstrual disorders: Such as absent or irregular periods, as elevated prolactin levels may indicate a hormonal imbalance.
Women with abnormal breast discharge: Whether during lactation or at other times, prolactin levels should be checked to identify any underlying issues.
Women trying to conceive: Recommended in cases of infertility or difficulty conceiving, since prolactin levels can affect ovulation.
Men with fertility issues: Such as erectile dysfunction or low sperm count, which may be associated with elevated prolactin levels.
Individuals with pituitary symptoms: Such as persistent headaches or vision problems, which could indicate pituitary tumors.
Individuals with hypothyroidism: This condition can be associated with elevated prolactin levels.
Individuals undergoing hormonal therapy: To monitor treatment effectiveness and track any changes in prolactin levels.

Indicative symptoms

Menstrual disorders: Such as absent or irregular periods, which may indicate hormonal issues.
Abnormal breast discharge: Discharge from the breasts in women or men, whether milky or bloody.
Infertility: Difficulty conceiving or recurrent miscarriages may warrant prolactin level evaluation.
Pituitary symptoms: Persistent headaches or vision problems that could indicate pituitary tumors.
Sexual changes: Decreased libido or erectile dysfunction in men may be related to elevated prolactin levels.
Hypothyroidism symptoms: Such as persistent fatigue, weight gain, and feeling unusually cold, which can be associated with high prolactin levels.
Polycystic Ovary Syndrome (PCOS) symptoms: Such as excessive hair growth or weight gain, which may also indicate elevated prolactin.

Frequently Asked Questions

Short answers to the FAQs published with this service.

What is a Prolactin Test?

A prolactin test measures the level of the hormone prolactin in the blood, which affects many body functions, including milk production and the menstrual cycle.

Why is a Prolactin Test Performed?

It is conducted to check prolactin levels in cases such as menstrual disorders, infertility, abnormal breast discharge, or symptoms related to the pituitary gland.

How is the Test Performed?

A blood sample is drawn from a vein, usually in the morning after fasting for a few hours.

What Factors Can Affect the Test Results?

Prolactin (Milk Hormone) Test

About this service

Test purpose

Recommended groups

Indicative symptoms

Normal levles

What is included?

Conditions and notices

Frequently Asked Questions

References and additional resources

Scientific references

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