Others, such as CVS and amniocentesis, may not be offered unless your age or other factors indicate that you or your baby are at higher risk for certain conditions or diseases. The multiple marker test significantly boosts the detection rates for Down syndrome. During the procedure, a device is moved across the abdomen that transmits sound waves to create an image of the uterus and fetus on a computer monitor. This test measures your blood-sugar level an hour after you've had a glass of soda. The procedure is done by inserting a needle through the abdomen into the amniotic sac and withdrawing fluid that contains fetal cells.
Analysis can detect neural tube defects and genetic disorders.
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