Prenatal Testing Timeline and Results-Date Calculator

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Turn an estimated due date into US timing windows for NIPT, nuchal translucency, CVS, amniocentesis, and the anatomy ultrasound.

This starts at the beginning of the usual window and stays editable.

This updates to a US planning value. Change it to your clinic’s estimate.

Peer-Reviewed Science
Updated Dec 2025
See Methodology
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Methodology

The due date is converted to a 40-week pregnancy timeline. Test windows follow current US guidance. Result dates add the visible, editable laboratory turnaround time to the planned test date.