A euploid embryo calculator is an educational fertility-planning tool that estimates how many blastocysts may be euploid based on the number of blastocysts available and an applicable euploid rate.
The calculator can use an age-banded population-level rate based on age at egg retrieval or an optional clinic/laboratory euploid rate when that rate has been supplied or medically reviewed by the relevant fertility provider or laboratory.
Its purpose is to organize population-level information and provide an estimated planning range. It does not determine whether PGT-A is appropriate for an individual patient and does not predict pregnancy or live birth.
Important: PGT-A is a screening test. This calculator does not treat a euploid result as a guarantee of implantation, pregnancy, or live birth and does not imply that PGT-A is universally indicated.
Estimate the number of blastocysts that may be euploid using an age-banded rate or an optional clinic/lab euploid rate.
The calculator multiplies the blastocyst count by the applicable euploid rate.
Euploid estimate = blastocysts × euploid rate
The calculated result can change when the blastocyst count, age at retrieval, or applicable euploid rate changes.
The age-banded rates are population-level observations and should not be interpreted as an individualized prediction for a specific embryo cohort.
The age-banded rates used by this calculator are derived from a published 2025 retrospective observational study of 9,385 blastocyst biopsy results from 1,719 autologous egg-retrieval cycles.
| Age at Retrieval | Published Euploid Rate |
|---|---|
| Under 30 | 74.5% |
| 30–34 | 68.2% |
| 35–37 | 57.4% |
| 38–40 | 44.5% |
| 41–42 | 25.0% |
| 43 and older | 19.2% |
The study reported age-related differences in blastocyst euploidy and also found that observed euploid distributions broadly followed a binomial structure across the studied cohort sizes. The calculator uses the published age-group rate for the simple expected-count calculation rather than attempting to reproduce the study’s full statistical model.
PGT-A limitations and screening context are based on current professional guidance from the American Society for Reproductive Medicine (ASRM).
Methodology review date: October 2026
Medical review requirement: The numeric age-banded assumptions must be reviewed and approved by the client’s designated medical reviewer before production publication. Clinic/laboratory rates should only be used when supplied or medically reviewed by the relevant provider.
Egg donation is a process where a woman (the egg donor) provides one or several eggs (also known as oocytes) for purposes of assisted reproduction, with the eggs being fertilized in the laboratory. Once fertilized, the resulting embryos are transferred to the recipient’s uterus to initiate a pregnancy, or they can be cryopreserved (frozen) for future use.
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