I have not been tested, but, like you, I have wondered if that would explain a lot of my life experiences growing up. But now, I think that it really doesn't matter. Yes, it could be an explanation, but I have accepted who I am. So the "cause" is really unimportant.
I equate it to the biological side of my psychologists' diagnosis of gender dysphoria. OK, I have it. Early on, I did read a lot of research about the various possible causes, but there is nothing definitive yet. Now what? Accept it or deny it. I decided to just accept it and move on.
I think if they did a test, no matter what the results, I would think, "OK, cool."
But it would not change my life even a little bit.