Many building contractors morn the passing of the use of asbestos in building materials....oh wait, it's still being used in building materials.

I agree the concern is a non-issue, unless your letting your kids play in the garage while your using a grinding the paint off your frame. If your that concerned, there are some very cheap lead paint test kits. I use a citrus based paint remover in a well ventilated area. It takes several more applications versus the stronger stuff, but it gets the job done.