Dual Embryo Transfer Advisor
Guideline-based tool using ASRM limits. This is guidance, not a medical order.
Using donor oocytes?
No (own oocytes)
Yes (use donor age)
Embryo stage
Blastocyst (day 5/6)
Blastocyst (day 7)
Cleavage (day 2/3)
Day-7 is allowed here so we can reflect poorer prognosis.
PGT-A result
Not tested / unknown
Euploid
Mosaic
If Euploid is selected, ASRM recommends single-embryo transfer.
Gestational carrier?
No
Yes
Advanced embryo factors (helps set prognosis)
First FET cycle
High-quality embryos available for cryopreservation
Prior live birth with a sibling embryo
Day-7 blastocyst
Mosaic (PGT-A)
Poor morphology
Any of: Day-7, mosaic, or poor morphology will mark prognosis as “not favorable.” The first three items tend to support a “favorable” prognosis.
Prognosis: not set
Comorbidities (select all that apply)
History of gestational diabetes
History of preterm labor/birth
History of preeclampsia/gestational HTN
Multiple prior cesarean deliveries (≥2)
Age ≥ 42 (auto)
Examples
Other examples that may increase risk with multiples: poorly controlled hypertension, significant cardiac disease, severe pulmonary disease, uterine anomalies, prior classical C-section. This tool is conservative; clinician judgment overrides.
Other comorbidity (optional)
Age (asked last on purpose)
Age at retrieval
(or donor age)
We ask age last so it’s clear the recommendation uses
all
factors, not just age.
Calculate recommendation
Why?
Enter details and click “Calculate recommendation.”
Source: ASRM committee opinion on embryo transfer limits. Last reviewed 2025-09-06.
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