In this type of prenatal diagnosis, karyotype analysis can be performed as early as 8 weeks.

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Chorionic villus sampling (CVS) can be performed as early as 8-12 weeks of pregnancy to obtain a small sample of placental tissue for karyotyping analysis. Amniocentesis can also provide karyotype analysis, but it is typically performed later in pregnancy at around 15-20 weeks. Cell-free fetal DNA analysis and pre-genetic diagnosis are newer, non-invasive prenatal testing options that do not involve karyotyping analysis. Polyploid analysis is not a commonly used prenatal diagnostic test.

In This Type of Prenatal Diagnosis, Karyotype Analysis Can Be