Do you think i could be Anemic?

okay quick, awesome and cool test to seee if your anemic, im not but i love when someone is haha... take a gold ring, a real one i mean as close to 24k as you can, and rub it on your skin, if a black line appears you are slightly anemic and should try to get more iron in your diet, if not your fine... i always thought it was the coolest thing, we even wrote stuff on my teacher once cause thats where we learned it haha