How can you find out If you have a Native American background?

My father, probably had native american in him, but I'm not certain , because he was adopted, and who his real father was, is a mystery. His adoptive parents were very quite about it, and the mother was'nt around. My father and everyone who could have known anything have passed. Im very curious to find out.... show more My father, probably had native american in him, but I'm not certain , because he was adopted, and who his real father was, is a mystery. His adoptive parents were very quite about it, and the mother was'nt around. My father and everyone who could have known anything have passed. Im very curious to find out. Is there anyway to know for sure. Could a blood test show if I have any Indian in my blood?
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