Yeah you would definitely need to test both the soil and the mushrooms. The last time I checked the only paper I found on Calvatea hyper-accumulating heavy meta

Yeah you would definitely need to test both the soil and the mushrooms. The last time I checked the only paper I found on Calvatea hyper-accumulating heavy metals was the old one that looked at samples a couple hundred yards from highways in Connecticut, so I think right now we probably just don't have enough data.