Prolactin (PRL)
Also known as: PRL
How to prepare
You can eat and drink normally before the test.
Collect 2–3 hours after waking. Avoid stress before the test.
Tell our phlebotomist about any medicines you take. Don't stop them without asking your doctor.
Wear a loose sleeve so the sample can be taken easily from your arm.
How it works
About this test
Prolactin is a hormone from the pituitary gland that helps produce breast milk. Abnormal levels can affect periods, fertility and sex drive in both women and men.
Why is this test done?
- Find the cause of irregular periods or infertility
- Breast milk discharge when not breastfeeding
- Low sex drive
Symptoms — when should you get tested?
- Irregular or missed periods
- Milky discharge from the breast
- Difficulty conceiving
- Headache or vision problems
Normal range
Reference ranges differ slightly between labs, methods, age and sex. Always discuss your report with your doctor.
If your result is high
High prolactin can stop ovulation and cause infertility.
Common reasons- Stress or recent sleep
- Some medicines
- Hypothyroidism
- Pituitary tumour (prolactinoma)
If your result is low
Low prolactin is rarely a concern.
Common reasons- Pituitary problems (rare)
How is the test done?
- 1Book online
Choose your slot for home collection or a visit to our centre.
- 2Blood sample taken
A trained phlebotomist takes a small blood sample from a vein in your arm with a sealed, single-use needle. It takes about 2 minutes.
- 3Tested in our lab
Your barcoded sample is tested on automated machines with strict quality checks.
- 4Report on WhatsApp
A pathologist checks the result and the report reaches you on WhatsApp and email.
Save more with a health package
This test is also included in these checkups along with many other tests.
Frequently asked questions
In the morning, 2–3 hours after waking, after resting for 30 minutes.
No fasting is needed for this test. You can eat and drink normally.
Your report is usually ready in same day after the sample reaches our lab. We send it on WhatsApp and email, and you can also download it from the Reports page.
Please call our team to confirm whether home sample collection is available for your location and test.
This test needs a blood sample. Collect 2–3 hours after waking. Avoid stress before the test.