Le One Day test

One Day Test

The One Day Test assesses the risk of Trisomy 21. This test detects 90% of affected fetuses.

Prenatal prevention and screening center

One Day Test

  • Maternal blood test

    to evaluate first trimester maternal serum markers (free beta and PAPP-A)

  • Anatomy scan

    performed by a sonographer specialized in prenatal diagnostics:

    • Measurement of nuchal translucency and analysis of other markers indicating a risk of chromosomal abnormality
    • Early screening for the main fetal abnormalities identifiable at this stage
    • Analysis of the uterine cervix and the placenta
  • Prenatal consultation

    with a specialist to discuss your screening test results

After this series of exams and consultations, other tests designed to screen (in particular NIPT on maternal blood [link]) or diagnose (chorionic villus sampling or amniocentesis) may be ordered.


You will also receive information about hygiene and preventing infection.

Le One day Test à l'Hôpital Américain de Paris

The One Day Test allows you to undergo all the necessary tests over a half-day. Results are available in less than three hours.

Make an appointment

in our Fetal Medicine Center
Learn more
American Hospital of Paris
2023-10-17T10:14:32