Your question is tagged with "mitochondrial", so I'm guessing that you already have a clue about the answer. A Full Spectrum mtDNA test, at FTDNA, could yield a result that indicates a native haplogroup. My ancestors had C1c and D1, which are both native haplogroups. I'm not familiar with the research on African American haplogroups.
You can also take an autosomal DNA test at Ancestry (or FTDNA or MyHeritage) to also get an ethnicity estimate. I have seen Ancestry attribute various native regions in Canada, parts of the US, and into Central and South America. I assume that they have an African American ethnicity measurement, but I have no experience with that. Sorry.