Chorionic villus sampling is not recommended for women who have vaginal bleeding or spotting during the pregnancy
Chorionic villus sampling is best performed between 10 and 12 weeks of pregnancy
An unborn baby
Chorionic villus sampling can be done at the 8th week. Amniocentesis cannot be performed until the 14th week of pregnancy.
Chorionic villus biopsy is not recommended for women who have vaginal bleeding or spotting during the pregnancy
This can be done after 10-12 weeks of pregnancy using a procedure called chorionic villus sampling (CVS).
Prenatal diagnosis of Types A and B of NPD can be done with amniocentesis or chorionic villus sampling.
An unborn baby
Chorionic villus sampling, amniocentesis and bone marrow procedures are done under a physician's supervision. The person is asked to rest after the procedure and is watched for weakness and signs of bleeding.
It can be done through chorionic villus sampling and amniocentesis but it is better and safer to wait until the baby is born to perform a paternity test.
Chromosomal counting can be determined through amniocentesis or chorionic villus sampling. They are done if initial bloodwork or ultrasound shows a possibility for chromosomal abnormalities and routinely done for mothers 35 years old and up.
A DNA paternity test can be done shortly after birth, a sample is gently taken in from the baby's mouth. The test can be done during pregnancy via amniocentesis or chorionic villus sampling but most doctors won't perform these tests without medical necessity due to the chance of miscarriage.
A paternity test while pregnant involves taking cells from the amniotic fluid or chorionic villi. Amniocentesis is performed in the second trimester, anywhere from the 14th-20th weeks of pregnancy (or later). Chorionic Villus Sampling is done between the 10th and 13th week. These tests are often discouraged for the sole reason of seeking paternity because of the increased miscarriage risks.