What is a Prolactin Test?

The prolactin test is utilized to measure the levels of prolactin present in the bloodstream. Prolactin is produced by the pituitary gland, a small gland located near the brain. Prolactin plays a crucial role in the growth of women's breasts and the production of milk, particularly during pregnancy or postpartum.


Why is the Prolactin Test Important?

  • During pregnancy or postpartum, women typically have higher levels of prolactin in their bodies.
  • Women who are not pregnant and men generally have lower levels of prolactin.
  • Elevated levels of prolactin may indicate the presence of a pituitary gland tumour known as a prolactinoma.
  • Prolactinomas can cause excessive release of prolactin by the gland, leading to issues such as lactation when not pregnant.
  • In women, excessive prolactin can also result in menstrual irregularities and difficulties in conceiving.
  • In men, it can lead to problems such as erectile dysfunction.
  • Prolactinomas are typically noncancerous, but if left untreated, they can cause damage to surrounding tissues.

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What is the use of the Prolactin Test?

Prolactin tests are most commonly used for:

  • Prolactinoma detection (a type of tumour of the pituitary gland)
  • Assist in determining the reason for a woman's menstrual irregularity and infertility.
  • Assist in determining the reason for a man's low-sex desire and erectile dysfunction.

How is the Test Performed?

The prolactin test is a simple blood test. your arm using a needle. The process is quick, usually lasting just a few minutes and there’s very little discomfort involved.


What is the need for a Prolactin Level Test?

If you experience signs of prolactinoma, you may require this test. Symptoms could include:

Symptoms of High Prolactin

Other symptoms vary depending on whether you're a male or a female. If you are a woman, your symptoms will also be affected by whether or not you have gone through menopause. Menopause normally begins around the age of 50 for a woman.

Excess prolactin symptoms in women who have not gone through menopause are:

Women who have had menopause may not have symptoms until the problem progresses. Excess prolactin after menopause frequently results in hypothyroidism. The body does not produce enough thyroid hormone in this situation.

Symptoms of excess prolactin in men include:

  • Nipple discharge
  • Low sex drive
  • Erectile dysfunction
  • Decrease in body hair

What Happens During a Prolactin Level Test?

  • You might feel a slight sting or brief discomfort when the needle is inserted, but it should only last for a few seconds.
  • After the prolactin blood test​ is drawn, you might feel a tiny pinch when the needle is removed, but there’s no major pain involved.
  • The process is fast and generally not difficult. Most people feel just a mild discomfort during the test, and there are no major risks. You can return to your normal activities right after the test.

How do prepare for the Prolactin Test?

This test should be taken three to four hours after waking up. Prolactin levels fluctuate throughout the day but are typically highest in the early morning.

Make sure your doctor is aware of any medications you are taking. Certain medications can cause an increase in prolactin levels. Birth control drugs, blood pressure medication, and antidepressants are examples.


Is there any risk in the test?

No, there is no such major risk or danger associated with the test. You may experience discomfort or bruising where the needle was inserted, it will go soon.

  • Discomfort at the injection site
  • Bruising
  • Dizziness
  • Infection

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What do the findings imply?

If your prolactin levels are greater than usual, you may have one of the following conditions:

  • Prolactinoma
  • Hypothyroidism
  • A condition affecting the hypothalamus. The hypothalamus is a brain region that regulates the pituitary gland and other bodily processes.
  • The illness of the liver

If your prolactin levels are high, your doctor may conduct an MRI (magnetic resonance imaging) examination to examine your pituitary gland in more detail. Prolactin levels that are too high can be addressed with medication or surgery. If you have any concerns about your results, speak with your doctor.

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Frequently Asked Questions

What is the Prolactin Test?

A prolactin level test is used to diagnose a prolactinoma (a type of tumour in the pituitary gland) and assist in determining the reason for a woman's menstrual irregularity and infertility. Assist in determining the source of a man's low-sex desire and erectile dysfunction.

What happens if Prolactin Test levels are high?

A high level of prolactin inhibits the synthesis of the hormones estrogen and testosterone. In females, too much prolactin can potentially prevent the release of an egg during the menstrual cycle (anovulation). Too much prolactin in guys can also contribute to reduced sperm production and bone deterioration (osteoporosis)

What is the normal range for the Prolactin Test?

The normal range for prolactin in:

  • Males: 2 to 18 nanograms per millilitre (ng/mL)
  • Nonpregnant females: 2 to 29 ng/mL.
  • Pregnant females: 10 to 209 ng/mL.

Does Prolactin cause weight gain?

Yes, high levels of prolactin can also result in weight gain.

When is the ideal time to have a Prolactin Test?

Prolactin levels can be examined at any time throughout your menstrual cycle. Prolactin levels fluctuate throughout the day, but they are highest when you are sleeping and first thing in the morning; thus the test is normally performed three hours after you get up.

Can Prolactin cause infertility?

Yes, prolactin can be the reason for infertility in women and also in men.

Is it necessary to fast before taking a Prolactin Test?

Yes, one must fast for 8 to 12 hours without eating before the test, however, you can drink water before the test.

What Prolactin level causes infertility?

Prolactin levels above 100 ng/mL can disrupt a woman's reproductive system's normal function, resulting in menopausal symptoms and infertility.

What is the cost of the Prolactin Test?

The price of the Prolactin Test is approximately Rs. 600 however it can vary due to certain factors like place or hospital.

Where can I get a Prolactin Test in Hyderabad?

You can avail Prolactin Test at Medicover Hospitals. It offers a wide range of diagnostic facilities.

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