Great advances have been made in the field of genetics, and it has provided fascinating information about the genome of humans. After the information is collected about the genome, the scientific community started its work in disease diagnosis by using this information. Image by Original uploader was Richard Wheeler (Zephyris) at en.wikipedia - Originally from en.wikipedia; description page is/was here., GFDL, Link What is genetic testing? Genetic testing or DNA testing refers to the medical techniques that are used to detect or diagnose diseases in humans that have a genetic origin. Basically, the changes that occur in the chromosome or gene of humans is determined, and then its possible consequences are studied. After a thorough evaluation of the changes, the experts come up with conclusions that define the behavior of the affected gene and the effects that it is producing or will produce in the future. This analysis also tells you that if this disorder is going to be transmitted to the next generation or not. The chances of its damage in your body and its risk in your generation can be evaluated with great accuracy. As result of all this, the doctors and the patient together plan the management of that disorder. The management involves multiple types of DNA testing. But the doctors chose only the best DNA testing for the health of the patient as not every type suit every genetic makeup. Sampled for Genetic Testing Presently, many companies offer genetic services. These companies have their own way of dealing with your disorders, and they have their own protocols of sample evaluation. Therefore, each of them asks for the sample according to their protocol requirement. Also, there are different sample requirements for different disorders. In most of the instances, the genetic test is carried out on the samples of blood, saliva, hairs, and skin. In case the patient is female and is expecting as well, then the doctors ask for the amniotic fluid. This fluid is taken from the womb of the mother, but it poses a great risk for the women and the child in the womb, so it is mostly avoided. Reasons for Genetic Testing Multiple reasons enforce a person to get the DNA or genetic testing. Medically, the most important one is the detection of any disease or disorder that a person carries in his genes is detected through it. Also, if there are chances that a person could face some mutation in his genes later in life, then it is controlled in advance. Other than this, the main reason for using genetic testing technique is when it comes to some criminal activity in which you have to find the real culprit. One can do the testing of all the suspects and easily reach the real one by matching the DNA with the samples spotted at the venue of crime. Using the genetic testing techniques, one can stay safe from many disorders because you get the information in advance. You become able to encounter it with precautions taken by your doctor. This is expensive testing but it worth your money for sure.