Down's syndrome screening: value of using free beta-hCG.
Densem
J
J
Wald
N J
NJ
D006063:Chorionic Gonadotropin / Q000097:blood*; D018997:Chorionic Gonadotropin, beta Subunit, Human; D004314:Down Syndrome / Q000175:diagnosis*; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D010446:Peptide Fragments / Q000097:blood*; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012016:Reference Values
D006063:Chorionic Gonadotropin; D018997:Chorionic Gonadotropin, beta Subunit, Human; D010446:Peptide Fragments