Prenatal diagnostics of anatomic and chromosomal defects at future child is represents high-allowing technology in system of obstetric monitoring behind the course of pregnancy and a condition of a fruit. Carrying out reform of system of prenatal screening in territorial subjects of the Russian Federation within transition to the international standard of diagnostics to early terms of the pregnancy which is carried out with support of the Government, demands regular audit. The analysis of the first results innovative for the country of mass combined PS of 1 trimester is carried out with use of the uniform software, allowing to calculate individual risk of frequent chromosomal aneuploidiya at a fruit on biochemical and ultrasonic markers only on condition of existence of personal competence of the ultrasonographer.