生殖地圖What is AMH? How to Interpret AMH Levels (Ovarian Reserve Indicator)
AMH (Anti-Müllerian Hormone) is a hormone secreted by the granulosa cells of small ovarian follicles, detectable via a blood test. Its level reflects the quantity of small follicles in the ovaries, and is therefore commonly used to assess 'ovarian reserve.' It is important to note that AMH reflects the 'quantity' of eggs, not egg quality, and does not equate to the ability to conceive naturally. Interpretation requires a physician to combine age, ultrasound, and other tests. AMH is not affected by the menstrual cycle, so it can be tested at any time with relatively stable values. Generally, young women have levels around 2–5 ng/mL, which gradually decline with age. The following is neutral information; actual interpretation and management should be based on a qualified physician's assessment.
FAQ
What is AMH and how is it tested?
AMH (Anti-Müllerian Hormone) is a hormone secreted by granulosa cells of small ovarian follicles, detectable via a single blood test. Because it reflects the quantity of small follicles in the ovaries, it is often used as an indicator of 'ovarian reserve.' The test can be arranged at obstetrics/gynecology clinics or assisted reproductive institutions, with no need for fasting or specific timing.
What is a normal AMH level?
Generally, young women have AMH levels around 2–5 ng/mL, which gradually decline with age. Clinically, a level below approximately 1.0 ng/mL is often considered a threshold for low ovarian reserve, but reference ranges vary slightly among laboratories. A single value cannot be interpreted alone; it must be combined with age and other tests by a physician.
Is AMH affected by the menstrual cycle?
Relatively not. A key feature of AMH is that its level is not significantly affected by the phase of the menstrual cycle, so it can be tested on any day of the cycle with minimal variation. This is one reason it is commonly used for stable assessment of ovarian reserve.
What does low AMH mean? Does it mean infertility?
Low AMH usually indicates a reduced quantity of available small follicles in the ovaries, reflecting the 'quantity' aspect of eggs. It does not directly equate to infertility, nor does it mean inability to conceive—low quantity does not necessarily mean poor quality. Whether further evaluation or early planning is needed should be determined by a physician based on age, antral follicle count on ultrasound, and overall condition. This page provides neutral information only.
What does high AMH mean?
High AMH levels are sometimes associated with Polycystic Ovary Syndrome (PCOS), as polycystic ovaries have a higher number of small follicles. However, a high level alone cannot diagnose any condition; it must be evaluated by a physician along with menstrual history, ultrasound, and other hormone tests.
What is the relationship between AMH and age?
AMH levels gradually decline with age, with a more noticeable decrease after age 35. This is why AMH is often used together with age to assess timing for fertility planning. However, individual variation is large; people of the same age can have significantly different AMH levels, so individual testing and physician interpretation are essential.
How is AMH testing related to egg freezing and IVF?
AMH is commonly used in pre-treatment assessment for egg freezing (oocyte cryopreservation) and in vitro fertilization (IVF) to help physicians understand ovarian reserve and plan treatment protocols and medication. For information on costs and procedures of egg freezing and IVF, please refer to the neutral pages 'How are egg freezing costs calculated?' and 'IVF treatment process' on this site.
How much does AMH testing cost and where can it be done?
AMH testing can be arranged at obstetrics/gynecology clinics or Ministry of Health and Welfare-approved assisted reproductive institutions. Costs vary by institution (commonly several hundred to over a thousand NTD; please refer to each institution's announcement). Some county/city egg freezing subsidies also cover AMH testing fees; see the page 'Which counties/cities offer social egg freezing subsidies?' on this site.
References (official data sources)
· This page is a neutral compilation of information, for reference only, not medical advice, and does not constitute any treatment commitment. Actual regulations and treatments should be based on announcements from competent authorities and explanations from qualified physicians.
