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DNA or deoxyribonucleic acid is a long molecule that is contained within almost all of our cells within the nucleus. The information in your DNA gets stored in the form of a code, which comprises of four nucleotide bases namely adenine (A), guanine (G), cytosine (C), and thymine (T).

DNA is prearranged into extended structures named chromosomes, which are then duplicated previous to the division of cells. Human beings contain 46 DNA molecules. Genes are working subunits of DNA. The genes take the instructions required for making thousands of proteins, which are available in a cell. All the proteins help to evaluate what your cell will finally look like, and also the kinds of jobs it will do. 

DNA tests have radically improved lives of people. Some tests are then used for clarifying the diagnosis. These tests are also helpful for the physician to understand appropriate treatments. There are many other tests that permit families to keep away from having children, and also avoid devastating diseases. It also identifies people that are at high risk and can be prevented.

Currently, more than 1000 genetic DNA tests are available from testing laboratories. DNA Genetic testing are used for several reasons for example, pre-implantation genetic diagnosis, prenatal diagnostic testing, newborn screening, presymptomatic testing for predicting adult disorders such as Huntington’s disease , presymptomatic testing for estimating the risk of developing adult-onset cancers and Alzheimer’s disease, conformational diagnosis of a symptomatic individual and forensic or identity testing.

There are many legal, social and ethical issues involved in DNA tests. The information from DNA genetic testing can affect the life of the individuals as well as their families. So information should be private and confidential. DNA Genetic testing is a complex process. There can be possibility of DNA testing laboratory errors due to contamination of samples and difficulty in accurate interpretation of results. Over all when it comes to genetic testing cost one should expect to pay from $400 to $900 on average.