IVF Success Rates

IVF Success Rates

At Chelsea Fertility NYC, we do not accept or deny patients for treatment based on likelihood of success. This is what we mean by open access.

The choice to undergo IVF treatment is a decision many women and couples make with the hope of a successful outcome. For a prime candidate in the majority of programs, transferring one blastocyst will yield almost a 50% pregnancy rate in women under the age of 35. For other candidates, SART (in conjunction with The American Society for Reproductive Medicine) has published guidelines on the recommended number of embryos to transfer based on specific patient characteristics, like age and history.

We are proud of our IVF success rates. However, we encourage patients to use other types of criteria when comparing treatment centers because there are a number of variables involved in successful IVF treatment. Most important to note is that:

• Our philosophy of clinical management is to not restrict poor responders and failed prior cycle patients from entering into their IVF programs (allowing them access to donor egg cycles only)
• Success rates decline as women age, especially after the mid-thirties
• Patient characteristics and entrance criteria vary widely among programs

How published success rates are calculated, and why a freeze-all program's reported rate understates its results, is explained in understanding IVF success rates.

After age 35 the success rates for IVF naturally decrease. Part of this decline is due to a lower chance of getting pregnant from ART, and part of it is due to a higher risk of miscarriage with increasing age (especially over age 40) which reflects the natural deterioration of the genetic integrity of the embryo with age. If patients require several cycles of treatment to have a baby, the success rates may also remain fairly constant over several cycles but may vary greatly between individual patients.

Advanced technology and uniformity in commercially available culture media has allowed all IVF treatment programs to reach optimal success rates.

For specific questions about our success rates, please contact Chelsea Fertility NYC.

If you have had unsuccessful cycles elsewhere, you are welcome to book a fertility second opinion.

Our PGT-A outcomes

Over the past two years we performed 87 egg retrievals in which patients elected preimplantation genetic testing for aneuploidy (PGT-A). Of those, 59 produced at least one euploid embryo available for transfer, and 45 resulted in a delivery.

• 87 retrievals with PGT-A
• 59 (68%) produced a euploid embryo to transfer
• 45 deliveries

Measured against the retrievals that produced a euploid embryo available to transfer, that is 45 of 59 — a 76% delivery rate. Measured against all 87 retrievals, including the 28 that produced no transferable embryo, it is 45 of 87, or 52%.

We publish both because the denominator is what makes a percentage meaningful. The 76% figure describes what happens once there is a healthy embryo to transfer. The 52% figure also counts the cycles in which no euploid embryo was obtained — which we include rather than exclude, because we treat patients with a poor prognosis rather than declining them.

For patients with a good prognosis, our results are as good as any clinic's. The figures above are the basis for that statement.

These are our own internal figures covering the two years to September 2026. They describe what happened in one small program over two years; they are not a prediction of any individual patient's outcome, and they are not SART-reported data. How published success rates are calculated explains why our SART-reported figures differ.

Outcomes without PGT-A, by age

For cycles without preimplantation genetic testing, over the same two-year period, pregnancy rates by patient age were:

• 35 and under — 45% pregnant
• 36 to 39 — 35% pregnant
• 40 to 41 — 25% pregnant
• Over 43 — 10% pregnant

These are pregnancy rates rather than delivery rates, and they describe cycles without genetic testing. Age is the strongest single predictor of outcome in IVF, which is why any clinic's overall average tells you little about your own situation.