During the 15th week of pregnancy there are no required tests, if desired, a pregnant woman can make ultrasound examination, where the future parents may see how their kid sucks a finger, or actively moves its legs and arms.

A little bit later the expectant mother should pass the second screening, which involves ultrasound and biochemical tests. The purpose of screening – is to identify the child’s possible problems and developmental disorders. During the second trimester the triple test carried out. It consists of the following analyzes:

  • the overall level of hCG (human chorionic gonadotropin)
  • the level of AFP (alpha-fetoprotein)
  • the level of free estriol.

The triple test is more accurate than the double test, conducted in the first trimester, so if the first screening for any reason was not done , the presence of deviations will be fixed in terms of the triple test.