| http://www.w3.org/ns/prov#value | - The following tests may be offered later in the pregnancy: Quadruple Screen Test - This blood test combines the results of four laboratory values, alpha-fetoprotein (AFP), estriol, Beta Human Choriogonadotropin (BHCG), and inhibin A to predict the chance that your baby has a chromosomal abnormality such as Down Syndrome or Trisomy 18 while also providing valuable information as to whether or not t
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