I had to go to an alternative doctor to find out I had heavy metal poisoning. Why don't conventional doctors test people for this?

I test almost off the scale in lead poisoning, am very high in mercury and significant in cadmium and almost as high in uranium, as well as showing well in many other heavy metals. I have the lab tests.

For crying out loud, I’m almost 60 years old. I’ve gone to a zillion conventional doctors and had many full physical exams and not one of them has even mentioned in passing about the possibility of heavy metals. It took a caring alternative doctor to diagnose and treat me.