Blood Drug Testing

ei 0096 jpg

ei 0096 jpg

Summary: tube defects such as spina bifida For this reason women who undergo CVS also need a follow up blood test between 16 to 18 weeks of their pregnancy to screen for neural tube defects How is CVS performed CVS may be offered to women who are at increased risk for chromosomal abnormalities or have a family history of a genetic defect that is testable from the placental

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