quad test

quad test2016-11-12T02:05:20+00:00

quad test

OBSTETRICS

A prenatal screening test for Down syndrome, so named because it is a triple test—which measures beta-hCG, alpha fetoprotein and oestriol—plus inhibin. Blood is drawn for the test at 16 to 18 weeks of gestation.

Results Elevated inhibin A and beta-hCG, and reduced AFP and oestriol are strongly suggestive of a Down syndrome baby. These results give the mother the option to abort the gestation in the early second trimester.

Synonyms Quad screen, quadruple screen, quadruple test, tetra screen, tetra test 

References en.wikipedia.org/wiki/Activin_and_inhibin

http://en.wikipedia.org/wiki/Triple_test

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