Reasons for Dna Testing

DNA testing is becoming more and more popular as a way of catching criminals and establishing family relationships (usually in the context of paternity through DNA paternity testing). But why is it that DNA testing specifically is favoured over blood testing and other methods of detecting parentage and what are the most significant reasons for its ongoing usage in both legal and medical circles?

1. DNA is unique to the individual concerned

It's good to know we're all unique. Our DNA is completely distinct from that of anyone else anywhere on the planet. It's like our own individual serial number - whilst we may share certain digits with others, we are in essence completely unique in the make-up of our DNA. What that means is that DNA testing is an important tool to identify genetic relationships, because when we share a number of DNA matches with someone who is alleged to be a relative, it is usually very safe to assume that a genetic link exists. Additionally, this also helps support DNA testing for legal purposes, in which it is possible to use DNA as a strong measure to support alleged guilt in serious crimes such as murders and sexual offences.

2. DNA testing is easy to sample

DNA samples can be obtained really easily, which is ideal for testing small children. An oral swab of saliva or a head hair can be sufficient to provide the DNA necessary for a paternity test, with a view to establishing a biological relationship between the alleged father and the child. Rather than having to test blood types or other forms of identifying family relations, DNA samples are quick and easy to take from any age group and pose no threat to the party donating the sample.

3. Highly-detailed for easy comparison

Because of the intricate nature of DNA, it is possible to use matching of genetic data as a highly conclusive way of establishing genetic heritage. Add to this the fact that no 'new' alleles can be introduced that aren't present in the mother or alleged father, and it becomes instantly clear whether or not there is a paternal relationship in place.

4. Allows DNA testing of more distant relatives for determining paternity

DNA testing, most frequently used in instances of paternity disputes, can be conducted without the need for a DNA sample from the father. What this means is that, in effect, the father need not necessarily contribute a sample of DNA where he is unavailable or unwilling to cooperate. By taking the DNA of close family members related to the alleged father it can be possible through DNA testing to determine whether a relationship does in fact exist.

5. DNA testing is cost-effective and relatively fast

DNA testing is gradually becoming more accessible to people all over the world. As competition increases and the technology improves, the price of DNA tests have come down drastically over the years. Added to this is the fact that it is quick and relatively stress-free to collect the DNA samples and send them to the laboratory, and results can be obtained relatively fast in as little as 48 hours.
As we have seen there are a number of advantages of DNA tests such as Paternity testing which have resulted in an increase in the demand for this type of testing all over the world.