Low ovarian reserve: what it means, how it is diagnosed, and what options exist

Hearing “low ovarian reserve” in a consultation raises plenty of questions, especially if you have been trying to have a baby for a while.

It helps to start with what the result does say and what it does not. Receiving that diagnosis does not on its own mean it is impossible. Ovarian reserve is one part of the picture, and it is interpreted alongside your age, your clinical history, and the rest of your tests.

What it actually measures

Ovarian reserve refers to the quantity of eggs remaining in the ovaries with the potential to take part in a reproductive process.

Women are born with a set number of eggs, which declines naturally over time. That decline happens in quantity and also, from certain ages onward, in quality.

When tests show a low reserve, it means the available quantity is lower than expected for your age. Two clarifications matter here:

• It does not indicate that your eggs are of lower quality. Those are two different things.
• It does not determine on its own whether you can conceive naturally.

Knowing your reserve is particularly useful when there is difficulty achieving pregnancy, when you are considering postponing motherhood, or simply when you want more information about your reproductive picture.

Age and reserve: a relationship worth understanding

Age is among the factors that weigh most on ovarian reserve. Even so, not every woman loses it at the same rate: some have a lower reserve than expected for their age, and others retain more follicles than predicted.

That variability is precisely why chronological age, important as it is, does not fully describe your situation on its own.

Age also relates to quality. After 35, the likelihood of obtaining chromosomally normal eggs decreases, which affects both the chances of pregnancy and the risk of pregnancy loss.

That is why an evaluation looks at both: how many eggs remain and how old you are, alongside the rest of your history.

The antral follicle count and AMH are the most widely used markers today

The three tests and what each one adds

Anti-Müllerian hormone (AMH). Produced by the small follicles in the ovary, it serves as an indicator of the approximate number of follicles available. Its practical advantage is that it varies little across the cycle, so it can be measured at almost any point.

Antral follicle count. These are small structures seen on transvaginal ultrasound. In each cycle some begin to develop and one goes on to release an egg at ovulation.

Follicle-stimulating hormone (FSH). It takes part in follicular development and in the process leading to ovulation. It is measured in blood, usually at the start of the cycle. When it comes back elevated, it generally indicates that the ovaries need more stimulus to develop follicles.

Ovarian reserve does not come down to a single test. AMH, antral follicle count, and FSH are complementary tools, and they make sense read together with your age and your history.

It is worth repeating what the American Society for Reproductive Medicine states plainly: these markers predict well how many eggs will be retrieved after stimulation, and they are poor predictors of reproductive potential on their own. They should not be used as a fertility test or to deny access to treatment.

What options exist

The path depends on what the complete evaluation shows, not on the number alone.

• IVF with an adjusted protocol. When reserve is low, stimulation is adapted to make the most of the available follicles.
• Egg or embryo accumulation. Several stimulation cycles to gather enough material before transfer.
• Fertility preservation, if pregnancy is not in your immediate plans and you want to keep options open.
• Egg donation, when the evaluation indicates it offers the best chances.
• Regenerative medicine, such as IVF MORE™, in specific cases with a medical indication.

None of these options is automatic. Each one answers a different scenario.

When to see a specialist

Seeing a specialist does not mean something is wrong. It can simply be the way to understand your fertility and decide with information.

The general reference is:

• Under 35: after 12 months of trying without success.
• Between 35 and 39: after 6 months.
• From 40 onward: an evaluation from the start makes sense.

Even so, there is no single right moment for everyone. Medical history, irregular cycles, previous surgery, or earlier reproductive experiences can justify moving it forward.

A personalized evaluation reviews your clinical and reproductive history to guide the next steps.

Frequently asked questions

Does low ovarian reserve mean early menopause?

No. They are different things. Diminished reserve means fewer eggs available than expected for your age, and many women with that diagnosis continue menstruating and ovulating normally for years.

Can ovarian reserve be increased?

No treatment increases the number of eggs. What can be worked on is the environment in which those eggs mature and the treatment strategy.

Can I conceive naturally with low reserve?

Yes, it happens. The marker reports on quantity, not on whether a particular egg can fertilize and develop. That is why it is not used as a fertility test.

How often should the tests be repeated?

It depends on the plan. If you are in active treatment or weighing options, your specialist sets the interval. Repeating an AMH every few months without a clinical decision behind it rarely adds anything.

One data point within a bigger picture

Fertility is not explained by a single number. Understanding how age and ovarian reserve relate gives a fuller picture, and allows you to decide with information and realistic expectations.

If you are trying to have a baby, or simply want to know where your fertility stands today, there is no need to wait for a difficulty to appear before informing yourself.