DNA testing is a very important tool for the family historian. It can help to confirm your family tree and help to find missing links. break. Adoptees now have a very real chance of finding close relatives or biological parents. DNA testing can provide surprises. You might uncover family secrets by matching with a cousin that you didn’t know existed. Conversely a relation who is expected to share DNA with you might turn out not to be a genetic relative at all. DNA is best used in combination with genealogical records in order to form conclusions about relationships. The test is completely safe; you just need to provide a cheek swab or a saliva sample which then gets sent away for analysis.