EFTS & STS Screen Negative
Enhanced First Trimester Screening or Second Trimester Screening can give you results that are either "screen negative" or "screen positive". If your test result is "screen negative", you might have questions about what this means and what the next steps are.
What the result means
A "screen negative" result means there is a lower chance for the pregnancy to have trisomy 21 (Down syndrome) or trisomy 18 (Edwards syndrome). A lower chance does not mean "no chance".
If you do not see a result for trisomy 18 on the report, it means the result is "screen negative" for this chromosome difference. Information about trisomy 18 is not on the report unless the result is flagged as "screen positive".
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Virtual educational sessions on prenatal screening and nuchal translucency quality assurance are available upon request for health‑care providers.