If you put your fingers over a flashlight and see the red tint is that your blood showing?

Maybe

I don't think so. You can see veins if you do that aswell, it's kinda gross lol.

it can also do a quick x ray in an emergency, but you do have go to a hospital for verification

Yes. The hemoglobin in your blood reflects red light waves. (You have to do this in a dark room to see it.)