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Originally Posted by glatt
Well, there is amniocentesis, but it's a little risky, and it's never done routinely because of that risk. Around 1% of fetuses are killed by the procedure.
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For some reason I thought an amnio couldn't be used for Down's testing, but a quick Google search shows I'm clearly wrong. What I don't get is how the test could be wrong, as in lookout's anecdote. Either the extra chromosome is there or it isn't... LabRat? Any clues?