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Why are high hCG levels an indicator of down syndrome?

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Dr. Richard Pollard
Anesthesiology

In brief: See below

As tests were developed to assess the fetal health it was noted that a fetus with down's syndrome had higher maternal HCG levels that a normal child.
This came to be part of the test, along with maternal age and ultrasound examination, to asses the risk of having a down's child.

In brief: See below

As tests were developed to assess the fetal health it was noted that a fetus with down's syndrome had higher maternal HCG levels that a normal child.
This came to be part of the test, along with maternal age and ultrasound examination, to asses the risk of having a down's child.
Dr. Richard Pollard
Dr. Richard Pollard
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