Hello and welcome to HCM,
Thank you for your query.
Yes. An amniocentesis
is usually done during the 16th and 22nd week of gestation. This helps in early detection of genetic and chromosomal disorders.
It is advisable for all pregnant women to get an amniocentesis done, although sadly not many are aware.
I hope I have succeeded in answering your questions, you could write back to me anytime for further clarifications.