Positive NT SCAN depends on the 95th centile value for that specific gestation/CRL .
SINCE YR NT is 2.4 ,it's normal.
Dual markers interpretation
More than 1:1000- low risk--> only do anomaly TIFFA SCAN at 18-20 weeks
1:251- 1:1000- INTERMEDIATE RISK --> do NIPT/CELL FREE DNA TEST or u can wait for scan at 16wks
<1:250- POSITIVE TEST--> do confirmatory test ( amniocentesis)
Next Steps
counselling by FETAL Medicine/geneticist
Health Tips
should go for NIPT/AMNIOCENTESIS