Trisomy 18 risk based on maternal age + Pregnancy associated plasma protein A + Choriogonadotropin + Nuchal translucency &#x7C; Fetus &#x7C; Chemistry - non-challenge
trisomy 18 risk based on maternal age + pregnancy associated plasma protein a + choriogonadotropin + nuchal translucency &#x7c; fetus &#x7c; chemistry - non-challenge
Trisomy 18 risk based on maternal age + Pregnancy associated plasma protein A + Choriogonadotropin + Nuchal translucency &#x7C; Fetus &#x7C; Chemistry - non-challenge
trisomy 18 risk based on maternal age + pregnancy associated plasma protein a + choriogonadotropin + nuchal translucency &#x7c; fetus &#x7c; chemistry - non-challenge