First trimester

First trimester

pierwszy-trymestr

First trimester

What is the subject of the prenatal test between the 11th week + 0 days and 13th week + 6 days of pregnancy?

Ultrasound examination and blood biochemical test (DUAL TEST) between the 11th week + 0 day and 13th week + 6 days of pregnancy are non-invasive prenatal tests. In the ultrasound examination, it is possible to evaluate the foetus anatomy and chromosomal abnormality markers in the foetus (namely, Down syndrome, Edwards syndrome and Patau syndrome). The test allows for the evaluation of the possibility of occurrence of the mentioned chromosomal aberrations in the foetus.

Chromosomal aberration markers in the first trimester of pregnancy involve:

  • Nuchal translucency (NT),
  • Nasal bone (NB),
  • Blood flow through tricuspid,
  • Ductus venosus flow.

Ultrasound test supplemented by the dual test increases the examination sensitivity and accuracy.