DNA testing is a scientific method used to analyze an individual's genetic material, known as deoxyribonucleic acid or DNA. This process can identify unique genetic markers that help determine relationships, ancestry, and even certain health conditions. It is commonly used in fields like forensics, paternity testing, and medical research. The testing typically involves collecting a sample, such as saliva or blood, which is then processed in a laboratory. Results can reveal information about a person's heritage, potential genetic disorders, and biological connections to others. DNA testing has become more accessible with the rise of commercial testing services.