How do the levels of lead compare to that in foods?

In comparison, the following are some examples of lead contained in vegetables and nuts:
 
Sweet Potato - 15 mcg per serving 
Spinach - 15 mcg per serving 
Brussel Sprouts - 16 mcg per serving 
Mixed Nuts - 20 mcg per serving 
Collard Greens - 30 mcg per serving (50x higher than Prop 65 stipulates)
 
mcg = microgram (one millionth of a gram)

We have extremely low amounts of lead in our shakes and it comes from anything chocolate or botanical sources (including whey) - basically anything that came from the ground as the lead is naturally occurring in the ground/dirt (which is why the cows would have gotten it for us to have it in the whey).


How did we do?