Paternity testing is possible with pregnancy. Paternity testing can be done using amniocentesis to collect amniotic fluid and extract fetal DNA and the DNA of the father to be tested for comparison. It is possible to have a paternity test examination during pregnancy. Paternity testing can be done by chorionic villus biopsy at 10-15 weeks of pregnancy. At 16-30 weeks of pregnancy, intrauterine amniotic fluid can be extracted. The amniotic fluid contains exfoliated cells, which are shed from the fetus and contain the fetus’s DNA, which can then be compared with the male partner for the purpose of paternity testing. Paternity testing during pregnancy will have a certain degree of risk, chorionic villus biopsy, the extraction of amniotic fluid may cause uterine infection, miscarriage, but not absolute, it is recommended to do paternity testing to regular hospitals, can ensure the safety of the fetus and mother.