At what week of pregnancy is the NIPT blood test most accurate and what does it actually screen for?
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The searches the AI actually ran for this prompt.
SEED QUERY
At what week of pregnancy is the NIPT blood test most accurate and what does it actually screen for?
1 real search · 1 real-search pass
ACOG cell-free DNA prenatal screening 10 weeks what conditions screened limitations fetal fraction screening not diagnosticGoogle ↗
OBSERVEDReason
Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.
Query classes
Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.
ChatGPT real searches (1)
Classes come from the query-classifier (a local Laya model). 1 of 1 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.
Searches and sources
ChatGPT1 real searches · gpt-6
ACOG cell-free DNA prenatal screening 10 weeks what conditions screened limitations fetal fraction screening not diagnostic Google ↗
- Society for Maternal‐Fetal Medicine Consult Series #74: Cell‐free DNA screening for aneuploidies: Updated guidance · pmc.ncbi.nlm.nih.gov
- Society for Maternal‐Fetal Medicine Consult Series #74: Cell‐free DNA screening for aneuploidies: Updated guidance - - 2025 - Pregnancy · obgyn.onlinelibrary.wiley.com
- Current ACOG Guidance · acog.org
- Screening for Fetal Chromosomal Abnormalities · acog.org