You will need
  • - DNA sample of the mother;
  • - DNA sample of the alleged father;
  • - DNA sample of the child;
  • - information on blood group and RH factor of the father, mother and child;
Knowing the blood groups of mother, child and alleged father, you can make a preliminary assessment whether this person is the father of your child. The fact that the blood group is determined by only three genes, therefore, simply to count, what blood type can be a child, if you know the blood group of parents. View the table whether the blood group of your child with the alleged.
The result can be considered negative if it turns out that with this combination of blood, like father and mother, the child can not be the blood that he has. The reliability of this negative result is around 99%. While a positive result does not say 100% that this man is the father of the child.
Another well-known parameter of blood is rhesus factor. It is less revealing than blood, as his inheritance is determined by only one gene. As can be seen from the table, quite accurate to say that the alleged father is not, only if both parents have RH negative and the child positive.
The most accurate method of establishing paternity is recognized as a method for DNA analysis. It allows you to determine how the baby's DNA similar to the DNA of the alleged father. The results of this test can have legal force.In order to conduct DNA analysis for paternity, you will need to provide to the laboratory the DNA samples of the mother, the alleged father (fathers) and child. It could be blood, then you will need to enlist the help of the laboratory. You can also provide a saliva sample or scraping of the mucosa of the mouth, if the laboratory to which you apply, is allowed.Usually receive the results of such an analysis takes about 14 days, but some laboratories offer a service of urgent analysis, which will cost more.The accuracy of a negative result is considered to be close to 100%, and the accuracy of a positive result is estimated at 99-99,9%.
There are laboratories offering home DNA test. In this case, you will receive detailed instructions on the sampling of biological material, which you send by mail. The results of such testing may not be admissible in court, but can help to dispel doubts, if any.