Nuchal scan vs dating scan

Keep in mind that an NT scan can only predict your baby’s risk: It doesn't offer a definitive answer about chromosomal abnormalities.An NT scan is a screening test, not a diagnostic test.There’s a small risk of miscarriage with both tests.

Results from the scan may be available on the same day of testing, and your doctor may discuss the findings with you before you leave.

Diagnostic testing, on the other hand, confirms the presence of a disease or condition.

To diagnosis a chromosome abnormality, ask your doctor about diagnostic testing.

Options include an amniocentesis, which is when a needle is inserted through your stomach into the amniotic sac to retrieve a fluid sample.

Amniotic fluid contains cells that provide genetic information about your baby. A sample of your placental tissue is removed and tested for chromosome abnormalities and genetic problems.

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