A DNA genealogy test can be helpful even for experienced genealogists. Church records and other documents used for researching family trees were not always accurate and complete when issued. There are numerous cases in which wars, unrest or natural disasters have led to the destruction of such records. In earlier times, documents of this nature were not even compiled and it used to be impossible to trace family relationships this far back.
It is precisely here that a DNA genealogy test can be helpful. By comparing different people you can check their relationships. This enables you to join together different branches of your family tree and confirm or disprove speculations and family legends as well as reach back into centuries from which no written records have survived with your research.