What is the sensitivity and specificity of the test? Obstetrics The standard screening test for Downs syndrome
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What is the sensitivity and specificity of the test?
Obstetrics
The standard screening test for Down’s syndrome is based on a combination of maternal age and the level of serum alpha-fetoprotein. Using this test 80% of Down’s syndrome cases can be identified, while 5% of normals are detected as positive.
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