By Nicole Arencibia, APRN, Fertility Center of Miami
W hen it comes to fertility, two key factors often come up: egg quality and egg quantity. While they sound similar, they represent very different aspects of reproductive health, and both play a crucial role in your fertility journey.
At Fertility Center of Miami, we believe that understanding the difference between the two helps you make confident, informed decisions about your future.

Egg quantity refers to how many eggs your ovaries are capable of producing. Every woman is born with a finite number of eggs, typically around one to two million at birth. This number naturally decreases over time as eggs are released during ovulation or lost through natural processes.
By the time puberty begins, the number of eggs drops to around 300,000–400,000, and only about 300–500 will ever be ovulated in a lifetime.
To evaluate your egg quantity, fertility specialists use specific tests, including:
Together, AMH and AFC give your fertility specialist a picture of your ovarian reserve, or egg quantity.
While quantity tells us how many eggs you have, egg quality tells us how healthy those eggs are, and that’s a vital distinction.
High-quality eggs are more likely to develop into healthy embryos after fertilization, which increases your chances of a successful pregnancy. The most significant factor that affects egg quality is age. As women age, the DNA inside the eggs becomes more prone to abnormalities, making fertilization or embryo development less likely.
That’s why two women can have the same number of eggs, but experience very different fertility outcomes depending on their age and egg quality.
Egg quality naturally begins to decline around the mid-30s, with a more noticeable decrease after age 37. However, every woman’s fertility story is unique, and these timelines can vary.
This is also where egg freezing (oocyte cryopreservation) becomes a powerful option. Freezing your eggs at a younger age allows you to preserve higher-quality eggs for future use, even if your egg quantity or quality decreases later in life.
At Fertility Center of Miami, we often use an egg freezing counseling tool to help guide this discussion. This personalized approach takes into account your age, hormone levels, and fertility goals to design a plan that fits your timeline and priorities.
Both egg quality and egg quantity matter, but in different ways.
By understanding your specific balance of egg quality and quantity, you and your fertility specialist can make the most informed decisions about your next steps.
Egg freezing is not about urgency or fear; it’s about creating options.
When you freeze your eggs at a younger age, you’re preserving them at their current level of quality. That means, even years later, you can use those younger, healthier eggs when you’re ready to start a family.
Egg freezing can be empowering for many reasons:
At Fertility Center of Miami, we guide patients through the process step by step, from fertility testing to stimulation, retrieval, and freezing, with compassion and clarity. Our goal is to help you make confident choices about your reproductive health.
Understanding your fertility is the first step in taking charge of it. Whether you’re curious about your current fertility status or actively planning for the future, knowledge is power.
Egg quality and quantity are important indicators, but they are just part of a bigger picture that includes your overall health, lifestyle, and reproductive goals.
Our fertility specialists can help interpret your test results and design a personalized strategy for your unique situation, whether that means trying to conceive soon or preserving your fertility for later.
Your fertility journey is deeply personal, and it should move at your pace, on your terms.
If you’d like to better understand your egg quality, quantity, and fertility preservation options, schedule a consultation with Fertility Center of Miamitoday.
Our expert team will guide you through every step, from testing to treatment, so you can make informed decisions about your future.
Contact Fertility Center of Miamito book your consultation and take control of your reproductive health today.