Mt-DNA tests can be taken by both males and females. Ancestry has discontinued this test. It is available from Family Tree DNA.
Mt-DNA is passed down from the mother to sons and daughters. However, only daughters can pass the DNA down to their children.
Therefore, the MtDNA test is only useful to trace one's direct female ancestry line. Since many of us can only trace our direct female ancestors (by last name) only back a few generations, this test has very limited value.
Sam Casey Jr has taken this test through ancestry.com and belongs to maternal haplogroup T, the Agrarians. No meaningful DNA matches were identified