IVF Due Date and Conception Dating
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For assisted reproduction, use the embryo age and transfer date recorded by the clinic rather than substituting an LMP estimate.
ART-derived dating
ACOG recommends assigning the estimated due date from ART-derived gestational age when pregnancy resulted from assisted reproductive technology.
Calculator limit
The general LMP calculator does not model every embryo-age and transfer protocol. Keep the clinic’s documented due date as the clinical reference.