Genetic testing is a medical test used to examine and identify changes in individuals’ chromosomes, proteins, or genes. Genetic testing typically looks for small to large abnormalities in the DNA of the blood, tissues, or fluids. Other DNA abnormalities include genes that are turned off, lost, or too active.
There are three main types of genetic testing:
Healthcare providers perform genetic testing for a variety of reasons like prenatal testing, carrier testing, forensic testing, or predictive testing.