Sometimes people need to determine whether they are related to each other in blood relationship. Most often, this examination is carried out in order to prove paternity.
Modern technology allows you to test for paternity by blood, saliva, hair and other, so-called, biological material. This is an ordinary analysis, which, nevertheless, can greatly affect our life. Examination of DNA for paternity is conducted to confirm parental rights, inheritance rights, and sometimes even to test the propensity to serious hereditary diseases.
How to make DNA analysis for paternity?
Today it is quite easy to obtain proof of fatherhood. To do this, you need to contact the clinic, which provides such services, and hand over analyzes of the biological material of the alleged father of the child and the baby. The easiest way is to take a swab from the mouth (from the inside of the cheek), while the DNA material is obtained from the saliva. Alternatively, it is possible to pass on hair (necessarily pulled out "from the root"), teeth, nails, earwax. A blood test is also suitable for a paternity test, but it is easier for physicians to work with saliva, since a blood test may be uninformative after transfusion, bone marrow transplantation, etc. The result of the DNA examination for paternity you will find out in a few days. At the same time, the test can be negative, when a man does not have a 100% child or a positive father. The probability of the latter is usually from 70 to 99%. It should be noted that DNA examination data have weight as evidence in court only when the probability of paternity is 97-99.9%.
Paternity Test for Pregnancy
Sometimes it becomes necessary to do DNA analysis before the birth of a child. This technology has appeared relatively recently - earlier genetic analysis on paternity was possible only after childbirth.
The test is carried out in the following way: the alleged father gives a blood test from the vein, and the DNA samples of the fetus are taken from the mother's blood, where the amount of this material sufficient for the examination is already accumulated by 9-10 weeks of pregnancy. There are other methods of sampling fetal biological material, for example, amniotic puncture (fetal fluid extraction). This method of determining paternity by DNA has the same accuracy, but it is much more dangerous due to the threat of complications and even termination of pregnancy, so doctors usually recommend refraining from such intervention.