AMH Levels Explained: What Your Ovarian Reserve Test Really Means
Started looking into your fertility? You've probably already run into the term AMH. It's one of the most commonly requested fertility tests — and also one of the most misunderstood. Here's what AMH actually is, what your result means, and just as importantly, what it doesn't.
What Is AMH?
AMH stands for Anti-Müllerian Hormone, produced by the small follicles in your ovaries. Since the number of these follicles naturally drops with age, AMH is used as a marker of ovarian reserve — a rough estimate of how many eggs you have left compared to other women your age.
It's a simple blood test, and it can be taken at any point in your cycle, which makes it an easy, accessible first step.
What Does My AMH Result Actually Tell Me?
Here's the bit that causes confusion: AMH measures egg reserve, not the actual number of eggs or quality. A high or low result doesn't tell you whether you can or can't get pregnant — it just gives a sense of how many eggs may be available, which helps guide decisions around timing, treatment, or further tests.
A higher AMH usually means more remaining follicles, often seen in younger women or those with PCOS.
A lower AMH points to fewer remaining follicles — a natural part of ageing, though it can happen earlier in some women for other reasons.
"Normal" shifts with age, so your specialist will always read your result against your age bracket, not a single fixed number.
What AMH Cannot Tell You
It's worth knowing the limits too. AMH can't pinpoint when you'll reach menopause, can't diagnose infertility by itself, and can't tell you for certain whether you will or won't conceive, naturally or otherwise. Think of it as one piece of a bigger puzzle, not a final verdict.
Does Ethnicity Affect AMH Levels?
A fair question, especially since so much fertility research comes from predominantly White populations. Our specialist, Miss Neelam Potdar, contributed to a study in the SM Journal of Gynecology and Obstetrics looking at exactly this in a UK population.
The study reviewed AMH results from 1,249 women at a Leicester fertility clinic — one of the UK's most ethnically diverse cities — across White, Asian, Black, and Mixed or Other backgrounds. The finding was reassuring: once age and FSH were accounted for, ethnicity didn't reliably predict AMH levels. Being Asian, Black, or Mixed ethnicity didn't, on its own, mean a lower ovarian reserve.
Age remained the dominant factor by far, with women over 35 substantially more likely to have a lower AMH regardless of background. The study did notice differences in when women from different ethnic groups sought fertility treatment, suggesting awareness and timing matter more than biology here.
The takeaway: your ethnicity isn't a fertility risk factor. Age is the variable to watch, which is exactly why testing and conversations sooner rather than later are worth having, whatever your background.
Read the full published research: Does ethnicity affect ovarian reserve? A retrospective study of Anti-Mullerian hormone levels in Leicester UK, Gogna K, Ashmore AA, Harrison AS, Potdar N. SM Journal of Gynecology and Obstetrics, 2021.
Why Might I Be Offered an AMH Test?
Commonly recommended if you're planning to try for a baby and want a clearer fertility timeline, considering egg freezing, being investigated for irregular or absent periods, assessed for PCOS, or preparing for IVF, where AMH helps guide medication dosing.
What Happens After My Test?
You'll have a consultation with one of our specialists, who'll explain your result in the context of your age, cycle, and circumstances. Where it helps, this may be paired with other hormonal testing for a fuller fertility profile, along with guidance on next steps.
Knowledge Is the First Step
Understanding your ovarian reserve brings real clarity, whether you're trying to conceive now, planning ahead, or simply curious. An AMH test won't answer everything, but it's a meaningful place to start.
Book your AMH and fertility hormone testing with Althea Women's Health today
This article is for general informational purposes and does not replace personalised medical advice. Please speak with one of our specialists about your individual circumstances.