DNA - Paternity Issues

The paternity issue can be a really difficult situation to be in and needs to be treated with sensitivity so that there is the least harm to all concerned.
Simply, in cases where there is a dispute over parentage; there are two types of test available to help prove if someone is the father or mother of a child.

Exclusion Test

Firstly there is a conventional blood test which is an exclusion test and may prove that someone is not the parent. It cannot prove with certainty that someone is the parent. The test will show the probability of someone being the child's mother or father depending on the blood groups of everyone involved.

DNA Test

Secondly there is a DNA test which can prove almost certainly whether someone is or is not the parent of the child being tested or whether or not someone is related to the child being tested. This test can be carried out on a sample of blood or other bodily fluid or tissue such as a swab from the mouth. Everyone has a unique DNA pattern and a child inherits half from each parent. Comparing your pattern with your child’s will identify which part of the pattern they inherit from you. For conclusive proof of paternity the remaining DNA pattern in your child must also be found in their other parent’s pattern of DNA.

Presumption of Paternity

If your ex partner is not paying child support to you, you could make an application to the CSA. They will contact your ex partner and if he denies that he is the father of your child, there are several things that they can do to try and establish this. They can make a presumption of parentage and will look at such evidence as being on the birth certificate, if you were married to each other when your child was born, etc. They could interview you both about this and they can offer him the option of having a DNA test. If he refuses then they will make a presumption of parentage. If your ex partner is proved to be the father, they can ask him to pay for the cost of the test. If you intend to try and establish paternity of your child you should seek specialist advice about this to make sure that you remain within the law; for information about the potential costs and about who will have to pay for the tests.

For further information read How do I get a paternity test?

You may also be interested in Court Directed Paternity Testing.