Trisomy 21 risk based on maternal age + Pregnancy associated plasma protein A + Choriogonadotropin + Nuchal translucency:Likelihood:Pt:^Fetus:Qn
trisomy 21 risk based on maternal age + pregnancy associated plasma protein a + choriogonadotropin + nuchal translucency:likelihood:pt:^fetus:qn
Ts 21 risk-age+PAPPA+HCG+NT Fetus
ts 21 risk-age+pappa+hcg+nt fetus