Understanding Fertility Testing Results: AMH, FSH, and AFC Explained
By Susan Davies, M.D.
Understanding Your Fertility Tests
Fertility testing results can feel overwhelming — especially when you’re trying to understand why pregnancy hasn’t occurred. Terms like AMH levels, FSH levels, and Antral Follicle Count (AFC) are commonly discussed during ovarian reserve testing, but they’re rarely explained in clear, reassuring language.
At Davies Fertility & IVF Specialists, we believe understanding your fertility testing results is the first step toward making confident, informed decisions about your reproductive health.
Let’s break down what these numbers actually mean — and what they don’t mean.
What Do Fertility Testing Results Measure?
Fertility testing evaluates ovarian reserve, or the number of eggs remaining in the ovaries. These tests do not measure your ability to conceive in a single month, nor do they determine whether pregnancy is possible.
Three of the most important markers in ovarian reserve testing include:
- AMH (Anti-Müllerian Hormone)
- FSH (Follicle-Stimulating Hormone)
- Antral Follicle Count (AFC)
Each provides different information — and no single result tells the whole story.
AMH Levels: Estimating Egg Quantity
AMH (Anti-Müllerian Hormone) is produced by small follicles in the ovaries. AMH levels are used to estimate egg quantity — not egg quality.
What AMH Levels Can Tell Us:
- Higher AMH levels often suggest a greater number of remaining eggs
- Lower AMH levels may indicate diminished ovarian reserve
- AMH helps guide medication dosing in IVF treatment
It’s important to understand that low AMH levels do not mean pregnancy is impossible. Many patients with lower AMH conceive naturally or with treatment. AMH is a planning tool — not a prediction of success or failure.
FSH Levels: How Hard the Ovaries Are Working
FSH (Follicle-Stimulating Hormone) is measured early in the menstrual cycle. FSH levels reflect how strongly the brain is signaling the ovaries to produce eggs.
What FSH Levels Can Indicate:
- Higher FSH levels may suggest reduced ovarian responsiveness
- Elevated FSH can signal diminished ovarian reserve
- Results must be interpreted alongside age, estradiol, and AMH
One elevated FSH level does not define your fertility. Hormone levels fluctuate, and interpretation requires clinical context.
Antral Follicle Count (AFC): Ultrasound Assessment of Ovarian Reserve
Antral Follicle Count (AFC) is measured by ultrasound at the beginning of a cycle. AFC counts the small resting follicles in both ovaries.
Why AFC Matters:
- Helps estimate how the ovaries may respond to fertility medications
- Guides IVF expectations
- Complements AMH levels for a more complete ovarian reserve picture
AFC provides a visual confirmation of ovarian reserve and is often one of the most helpful tools in fertility treatment planning.
Putting Fertility Testing Results Into Perspective
Many patients focus heavily on numbers — especially when results are labeled “low” or “abnormal.” But fertility testing results must always be interpreted within the bigger picture.
Fertility depends on multiple factors, including:
- Age and egg quality
- Sperm health
- Uterine environment
- Ovulation timing
- Overall reproductive health
Ovarian reserve testing evaluates egg quantity, not quality. Egg quality is primarily influenced by age and cannot be directly measured with a blood test.
Importantly, many individuals with lower AMH levels or higher FSH levels still conceive successfully with personalized care and appropriate treatment.
Fertility Testing in the Chicagoland: Personalized Guidance Matters
If you’ve recently received fertility testing results and feel uncertain about what they mean, you’re not alone. Numbers without explanation can cause unnecessary anxiety.
At Davies Fertility & IVF Specialists in Glenview, we take time to explain your AMH levels, FSH levels, and Antral Follicle Count in clear, compassionate terms — and discuss what options make the most sense for your goals.
Every fertility journey is unique. Your test results are simply one piece of the puzzle.