There is no single test that directly measures egg quality. The tests available today measure egg quantity (how many eggs remain in your ovaries), while egg quality, which refers to whether those eggs are chromosomally normal and capable of producing a healthy pregnancy, can only be confirmed after fertilization during IVF. That said, a combination of blood tests, ultrasound, and age-based data gives fertility specialists a meaningful picture of where you stand.
Why Egg Quality and Egg Quantity Are Different
This distinction trips up a lot of people, so it’s worth getting clear on. Egg quantity is your ovarian reserve: how many eggs your ovaries still have available. Egg quality refers to whether an individual egg has the right number of chromosomes and enough cellular energy to develop into a healthy embryo. Two women can have the same number of eggs but experience very different fertility outcomes depending on their age and the chromosomal health of those eggs.
The standard fertility tests, including AMH blood levels and antral follicle counts, measure quantity. They tell your doctor how your ovaries might respond to fertility treatment, but they don’t reveal which eggs are chromosomally normal. That’s why age remains the single strongest predictor of egg quality, even though it’s not a “test” in the traditional sense.
Blood Tests That Measure Ovarian Reserve
AMH (Anti-Müllerian Hormone)
AMH is a hormone released by the small follicles in your ovaries, and it’s the most commonly used marker for ovarian reserve. A higher level generally means more eggs remain; a lower level suggests a reduced supply. In women aged 18 to 40, levels between 1.0 and 3.5 ng/mL are considered normal, while levels below 1 ng/mL indicate low reserve. Levels below 0.7 ng/mL in women over 30 are a stronger signal that the egg supply is significantly diminished.
One advantage of AMH is that it can be drawn on any day of your cycle. Many clinics include it in a day 3 panel for convenience, but the timing isn’t strict. AMH levels decline naturally with age, so interpreting your number always requires context about how old you are.
FSH (Follicle-Stimulating Hormone)
FSH is drawn on the third day of your menstrual cycle, counting from the first day of full menstrual bleeding. Your brain produces FSH to stimulate your ovaries each month. When fewer eggs are available, the brain has to work harder, driving FSH levels up. So a higher number is actually a worse sign.
Normal day 3 FSH is generally below 9 mIU/mL. Levels between 9 and 11 are considered fair but may indicate a slightly reduced response to fertility treatment. Between 11 and 15, ovarian reserve is considered reduced, with lower embryo quality and live birth rates on average. Above 15, most clinics expect a significantly diminished response, and levels above 20 are typically a stopping point for many IVF programs. Menopausal women have FSH levels above 40.
Estradiol
Estradiol is also drawn on day 3 alongside FSH. Clinics generally want this level below about 80 pg/mL. An elevated day 3 estradiol can artificially suppress FSH, making a poor ovarian reserve look normal on paper. The two numbers are interpreted together.
Antral Follicle Count (AFC)
At the same day 3 visit, your doctor will perform a transvaginal ultrasound to count the small, fluid-filled follicles visible on each ovary. These antral follicles represent the pool of eggs available for that cycle. A combined count across both ovaries gives a snapshot of your reserve. Lower counts suggest fewer eggs are available and that the ovaries may not respond as strongly to stimulation medications.
AFC is quick and noninvasive. Together with AMH, it provides the clearest available picture of ovarian reserve. Neither test, however, reveals anything about the chromosomal health of the eggs inside those follicles.
What These Tests Can and Cannot Tell You
The American Society for Reproductive Medicine has stated that ovarian reserve markers are poor predictors of reproductive potential independent of age. In practical terms, this means a low AMH or high FSH tells your doctor you have fewer eggs, not that those eggs are necessarily bad. Conversely, strong reserve numbers don’t guarantee that your eggs are chromosomally normal. Reserve testing is most useful for predicting how well your ovaries will respond to IVF medications and how many eggs a retrieval might yield.
This is where age fills in the gap. Chromosomal abnormality rates in eggs rise sharply over time. Data from over 21,000 embryos tested during IVF found the following aneuploidy (abnormal chromosome count) rates by age group: 46% in women under 35, 54% at ages 35 to 37, 63% at ages 38 to 40, and 66% at ages 41 to 42. Even among younger women, nearly half of embryos tested were abnormal, which is why fertility specialists treat age as the most reliable indirect measure of egg quality.
PGT-A: Testing Embryos After Fertilization
The only way to directly assess whether an egg produced a chromosomally normal embryo is through preimplantation genetic testing for aneuploidy, or PGT-A. This is done during IVF: after eggs are retrieved and fertilized, embryos develop for five or six days, then a small number of cells are biopsied and analyzed for the correct number of chromosomes. Embryos that pass are called euploid and have the highest chance of implanting and leading to a live birth.
PGT-A doesn’t test the egg directly. It tests the embryo that resulted from it. But because most chromosomal errors in embryos originate from the egg rather than the sperm, PGT-A results are the closest available proxy for egg quality. The catch is that you need to go through an IVF cycle to get this information, so it’s not a screening tool for someone simply wondering about their fertility.
AI-Based Egg Assessment in IVF
Newer technology is starting to evaluate egg quality visually. AI software can now analyze microscopic images of eggs taken during IVF and predict outcomes with meaningful accuracy. One system called Violet, studied in a clinical setting, predicted whether an egg would fertilize with 82.4% accuracy and whether it would develop to the blastocyst (day 5 embryo) stage with about 67% accuracy. For predicting live birth from a group of eggs, it achieved 75% accuracy with 93% sensitivity.
These tools analyze subtle features of the egg’s appearance that human embryologists might not consistently detect. They’re currently used in some IVF clinics to provide more personalized counseling, particularly for women freezing eggs who want to understand how their retrieved eggs might perform. This technology is still relatively new and not yet standard, but it represents the first real attempt to assess egg quality before fertilization.
What the Testing Process Looks Like
If you’re looking to get tested, the standard workup is straightforward. You’ll schedule a visit on the third day of your menstrual cycle for blood draws (FSH, estradiol, and often AMH) and a transvaginal ultrasound for the antral follicle count. The entire appointment typically takes under an hour. Results from blood work may come back within a few days, and the ultrasound count is available immediately.
Your doctor will interpret the numbers together, always in the context of your age. A 28-year-old with a slightly low AMH is in a very different situation than a 40-year-old with the same number. If results suggest diminished reserve, the next conversation usually involves whether to pursue fertility treatment or egg freezing, and how urgently. If reserve looks strong and you’re younger, those numbers are reassuring about quantity, though they can’t make promises about the chromosomal quality of individual eggs.
For anyone not yet pursuing IVF, the combination of AMH, FSH, estradiol, and AFC is the most information you can get without going through a treatment cycle. It won’t answer the egg quality question definitively, but paired with your age, it gives you and your doctor a solid foundation for planning next steps.