Serum screening for Down's syndrome. Vacutainer system can lead to inaccurate results.
Bartlett
W A
WA
Ford
C
C
Jones
A F
AF
D000328:Adult; D006063:Chorionic Gonadotropin / Q000032:analysis; D004314:Down Syndrome / Q000517:prevention & control*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000592:standards*; D000509:alpha-Fetoproteins / Q000032:analysis
D006063:Chorionic Gonadotropin; D000509:alpha-Fetoproteins