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The test may be called something else now because it has four tests in one or something like that. It is a blood test to show your risk of having a down syndrome baby or a baby with neural tube defects. It is usually done around 16-18 weeks pregnancy and according to the levels in your blood it could show a problem. The problem with this test is that is has a big false positive chance and scares a lot of people. In my case, because of my age I was required to have the level 2 ultrasound before I got my blood tests results in.

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