AMH (Anti-Müllerian Hormone)

Anti-Müllerian hormone (AMH) is a hormone produced by the granulosa cells of the ovarian follicles. It serves as a marker of ovarian reserve — the number of eggs remaining in the ovaries. AMH levels naturally decline with age and can also be affected by certain medical conditions, such as polycystic ovary syndrome (PCOS), where levels are often raised.

An AMH test is a simple blood test that measures the level of AMH in the blood. Because AMH remains relatively stable throughout the menstrual cycle, the sample can be taken on any day. It is most commonly used to assess a woman's ovarian reserve — offering insight into fertility potential and helping to guide fertility treatment such as IVF — and can also support the diagnosis of PCOS.

The signs of low ovarian reserve vary depending on a woman's age and the degree of decline, but may include:

• Difficulty conceiving: reduced ovarian reserve can make it harder to become pregnant.
• Early menopause: the menopause may occur earlier than the average age of around 51.
• Irregular or absent periods: cycles may become irregular or stop altogether.

AMH

No special preparation required.

For blood tests, we recommend drinking plenty of water beforehand to ensure smooth sample collection. If you are taking any regular medication, continue to do so unless advised otherwise by your doctor.