I don't need to have it tested. The odds that they used lead paint back in the '70s are quite high. Last year I spoke to a contractor who does a lot of work in my neighborhood and he said they don't test, they just assume there's lead paint involved.

The only way I would do this myself would be to use the Soy-Gel.

http://www.franmar.com/paint-removal...-urethane.html

"Soy Gel encapsulates the surface of your furniture or floors in its thick gel, preventing lead or other hazardous particles from escaping into the air."