Procedure
Taking a genealogical DNA test requires the submission of a DNA sample. This is usually a painless process. The most common way to collect a DNA sample is by a cheek-scraping (also known as a buccal swab). Other methods include spit-cups, mouthwash, and chewing gum. After collection, the sample is mailed to a testing lab.
Some laboratories, such as the Human Origins Genotyping Laboratory (HOGL) at the University of Arizona, offer to store DNA samples for ease of future testing. All United States laboratories will destroy the DNA sample upon request by the customer guaranteeing that a sample is not available for further analysis.
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