Sema4’s regional genetic ancestry results are based on genetic data from 26 world populations. Other companies that administer ancestry tests may use reference data sets that contain different world populations, as well as additional sources like self-reported ancestry profiles, to calculate your data.
Because ancestry tests conducted by other companies do not use the same reference data sets as Sema4, the ancestry results you receive from each company may vary.
Additionally, you will not be able to use this test to find relatives or people who share your DNA.