PGT outcomes by maternal age

How many normal embryos can I expect from an IVF–PGT cycle?

Based on real-world data from 5,016 IVF–PGT cycles and 27,841 embryos biopsied for PGT, we developed a predictive model to estimate expected outcomes based on maternal age.

Enter the maternal age at the time of egg retrieval to receive:

Estimated number of embryos available for biopsy per cycle

Expected number of chromosomally normal (euploid) embryos

Probability of having zero euploid embryos

This tool is designed to provide realistic, data-driven expectations to support clinical decision-making and patient counseling.

1. Please enter your age

Maternal age at egg retrieval (years): 35

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The data below is calculated for a woman who is 35 years old.

Distribution of PGT cases by age, %

Share of total PGT cases by maternal age at egg retrieval (model training cohort; ages 22–45). Selected age is highlighted.

Chance of having ZERO normal embryos per IVF cycle

15.1%

Observed euploidy rate in dataset

59.0%(n=531 cycles)

Expected euploidy rate based on age

56.9%

2. How many embryos can I expect for biopsy per IVF cycle?

Maternal age: 35

Expected embryos for biopsy

5.98

Range: 0–19 (≈95%)

Observed in dataset

6.39

Sample size (n): 531
Min–Max: 1–30
P(value = 0): 0.0%

Simulated

Frequency from model simulation

Observed

Real data frequency (n=531)

3. Expected normal (euploid) embryos per IVF cycle

Maternal age: 35

Expected normal (euploid) embryos

3.40

Range: 0–11 (≈95%)

Observed in dataset

3.77

Sample size (n): 531
Min–Max: 0–26
P(value = 0): 8.7%

Simulated

Frequency from model simulation

Observed

Real data frequency (n=531)

Related tools

For rate-based estimates from the legacy cohort, see the euploid yield calculator.

Open euploid yield tool

About the statistical model

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