When is chorionic villus sampling (CVS) ideally performed during pregnancy?

Chorionic villus sampling (CVS) is ideally performed between 10 and 13 weeks of gestation. This timing is critical because it aligns with the period during which the chorionic villi can be adequately sampled, allowing for early identification of genetic disorders. During this window, the risks of miscarriage associated with the procedure are also relatively lower when compared to later gestational ages, making it an optimal time for both diagnostic accuracy and maternal safety.

Performing CVS at this stage provides the advantage of early decision-making for parents, especially if there are concerns about chromosomal abnormalities or genetic conditions. It is a minimally invasive procedure that can yield results faster compared to amniocentesis, which is typically done later in the second trimester. Thus, the recommendation for CVS to be done between 10 and 13 weeks is well-supported in clinical practice.