How Do At-home Genetic Tests Work? At-home genetic tests use a sample of saliva, blood, or a cheek swab that is collected at home and sent to a private laboratory.… Click to show full abstract
How Do At-home Genetic Tests Work? At-home genetic tests use a sample of saliva, blood, or a cheek swab that is collected at home and sent to a private laboratory. Your DNA is extracted from the sample and tested for a limited number of specific genes that may be tied to health risk. Each testing company selects which genes to analyze. Some at-home tests are sold directly to consumers without a physician’s referral or prescription (eg, 23andMe, Ancestry). Other tests can only be ordered through a health care professional.
               
Click one of the above tabs to view related content.