AMH, FSH & Ovarian Reserve: What Fertility Testing Can—and Cannot—Tell You
By Susan Davies, M.D.
Understanding Ovarian Reserve: More Than Just a Number
Few fertility topics generate as much confusion—and anxiety—as ovarian reserve testing.
Patients often arrive at appointments carrying laboratory results and asking: “My AMH is low. Does that mean I can’t get pregnant?” Or: “My friend has a higher AMH than I do. Should I be worried?”
These questions are understandable.
While fertility testing provides valuable information, test results rarely tell the entire story. Understanding what these numbers mean—and what they don’t mean—can help patients make more informed decisions about their reproductive health.
Across Chicago, Glenview, and the North Shore communities, ovarian reserve testing is one of the most common reasons patients seek fertility guidance.
Did You Know?
A single fertility test cannot predict whether someone will become pregnant.
Fertility is influenced by many factors, including age, egg quality, ovulation, reproductive health, sperm health, and overall medical history.
What Is Ovarian Reserve?
Ovarian reserve refers to the estimated number of eggs remaining in the ovaries.
Women are born with all the eggs they will ever have.
Over time, the number of available eggs naturally declines.
Ovarian reserve testing helps physicians better understand reproductive potential and can provide insight when planning fertility treatment or family-building goals.
However, ovarian reserve is only one piece of a much larger fertility picture.
What Is AMH?
AMH stands for Anti-Müllerian Hormone.
This hormone is produced by small follicles within the ovaries and is commonly used to estimate ovarian reserve.
In general:
• Higher AMH levels often suggest a greater number of remaining eggs.
• Lower AMH levels may suggest a lower ovarian reserve.
AMH is valuable because it can be measured at any point during the menstrual cycle and often provides helpful information about how the ovaries may respond to fertility medications.
However, AMH does not measure egg quality or predict pregnancy success.
This distinction is important and frequently misunderstood.
What Is FSH?
FSH stands for Follicle-Stimulating Hormone.
FSH is produced by the brain and helps stimulate ovarian follicle development.
Typically, FSH is measured early in the menstrual cycle on cycle days 2-4.
Higher FSH levels can sometimes indicate that the ovaries require more stimulation to recruit follicles, which may suggest a declining ovarian reserve.
Like AMH, FSH provides useful information—but it is only one piece of the overall assessment.
What Fertility Testing Can Tell You
Ovarian reserve testing may help provide information about:
• Estimated egg quantity
• Potential response to fertility medications
• Fertility preservation planning
• Family-building timelines
• Treatment considerations
These tests can be especially helpful for patients considering:
• Egg freezing
• IVF treatment
• Fertility evaluation
• Future reproductive planning
When interpreted alongside age, medical history, and additional testing, ovarian reserve assessments can provide meaningful insight.
What Fertility Testing Cannot Tell You
This is where many misconceptions arise.
AMH and FSH cannot:
• Predict whether you will become pregnant naturally
• Determine egg quality
• Guarantee IVF success
• Predict exactly when menopause will occur
This is why fertility testing should never be interpreted in isolation.
Numbers matter—but context matters more.
Two patients with identical AMH levels may have very different fertility experiences based on age, reproductive health, and other factors.
Why Age Still Matters
One of the most important fertility factors remains age.
While ovarian reserve testing estimates egg quantity, age remains one of the strongest indicators of egg quality.
Patients are often surprised to learn that someone with a lower AMH level may still have successful pregnancy outcomes depending on their overall fertility picture.
Understanding how age, ovarian reserve, and reproductive health work together provides a much more complete assessment than any single laboratory value.
When Should You Consider Fertility Testing?
Fertility testing may be appropriate for patients who:
• Are over age 35
• Have been trying to conceive without success
• Have irregular cycles
• Have a history of endometriosis or PMOS
• Are considering egg freezing
• Want to better understand their reproductive health
Many patients also pursue testing simply because they want more information about their future family-building options.
Knowledge can be empowering.
What We Often Hear From Patients
“My AMH is low. Does that mean I can’t get pregnant?”
This is one of the most common concerns Dr. Davies hears.
The answer is often more nuanced than patients expect.
Many individuals assume fertility testing provides a definitive answer about future pregnancy. In reality, fertility is influenced by numerous factors, and test results are most meaningful when interpreted within the context of a patient’s complete medical history and goals.
For many patients, understanding what these results actually mean can bring significant reassurance.
Dr. Davies’ Perspective
After more than 20 years helping patients navigate fertility decisions, Dr. Susan Davies has reviewed thousands of fertility test results.
According to Dr. Davies:
“Fertility testing provides valuable information, but it is only one piece of the puzzle. The most important conversations happen when we interpret those results in the context of the individual patient.”
One of the strengths of a personalized fertility evaluation is the opportunity to move beyond numbers and focus on the broader picture of reproductive health, timing, goals, and available options.
Common Questions About Ovarian Reserve Testing
What is a normal AMH level?
Can lifestyle changes improve fertility?
Does low AMH mean I cannot get pregnant?
What does FSH actually measure?
Should I see a fertility specialist before trying to conceive?
Should I have fertility testing even if I'm not trying to conceive right now?
Can fertility testing predict IVF success?
Making Sense of Your Fertility Testing Results
Fertility testing can provide valuable insight, but understanding what the results mean—and what they don’t mean—is equally important.
Whether you’re actively trying to conceive, considering fertility preservation, or simply looking for answers, individualized interpretation can help transform numbers into meaningful information.
Schedule a consultation with Dr. Susan Davies to better understand your fertility testing results and explore the options that may be right for you.
About the Author
Dr. Susan Davies, M.D.
Dr. Susan Davies is a board-certified reproductive endocrinologist and fertility specialist with more than 20 years of experience helping individuals and couples build their families. Through personalized, physician-led care, she combines advanced reproductive medicine with compassionate patient support.