How to do fetal paternity testing? The accuracy rate is so high

Some people simply think that only babies after birth can undergo paternity testing. In fact, this is not the case. Fetuses can also undergo paternity testing. Fetal paternity testing uses DNA analysis technology to identify the biological father of the fetus. The sample for fetal paternity testing requires about 5 ml of amniotic fluid from a pregnant woman who is 12-26 weeks pregnant. The amniotic fluid is required to be transparent and contain no red blood cells. At the same time, blood samples from the mother and the suspected father must be provided.

1. Can a fetus be used for paternity testing?

Can. Fetal paternity testing uses DNA analysis technology to identify the biological father of the fetus. The fetal paternity testing sample requires about 5 ml of amniotic fluid from a pregnant woman who is 12-26 weeks pregnant. The amniotic fluid is required to be transparent and contain no red blood cells. Blood samples from the mother and suspected father were also provided.

2. Is the accuracy of fetal paternity testing high?

Accuracy rate: 99.9999%. Now, drawing amniocentesis for paternity testing is a mature technology. The key is that drawing amniocentesis has high requirements and can only be done in Grade 3A or above hospitals.

3. Prenatal paternity test:

"Prenatal paternity testing", also known as embryonic paternity testing or fetal paternity testing, refers to the use of genetic technology to identify the genetic father of the fetus. When the genetic father of the fetus is unknown, "prenatal paternity testing" can extract cells from the amniotic fluid of the pregnant woman and confirm the father-son relationship by identifying the fetus's DNA (deoxyribonucleic acid).

4. Preoperative examination for antenatal fetal identification:

Before extracting chorionic villus tissue or amniotic fluid, the mother must undergo necessary preoperative examinations and the procedure can only be performed after all contraindications to the puncture have been ruled out. Preoperative examinations include blood routine, coagulation function, and preoperative infection screening (hepatitis B, syphilis, and AIDS). If the pregnant woman is a hepatitis B patient, liver function and blood HBV test are also required.

DNA testing.

5. Fetal paternity test sample collection method:

1. Amniotic fluid sample collection: Usually performed after the 16th week of pregnancy, the obstetrician and gynecologist extracts a small amount of amniotic fluid from the abdominal wall of the mother as a sample under B-ultrasound monitoring.

2. Chorionic villus sampling: Usually performed between the 10th and 13th weeks of pregnancy, a small portion of the chorionic villus tissue (which eventually forms the placenta) is extracted as a sample for testing.

Fetal paternity testing[1]

Time: Generally, doctors can collect fetal chorionic villus from pregnant women during the 10th to 13th week of pregnancy, and amniotic fluid from 16th to 24th week of pregnancy. Obstetrics and gynecology hospitals with mature technology can collect amniotic fluid from 16th to 30th week of pregnancy. If it is an early pregnancy test, for the safety of the fetus, the test center will refuse to accept the test application from the person being tested.