I check labdoor every time I'll get something relevant (protein powder, chocolate, multivitamin) as a psychological reference, but I can't find any convincing e

I check labdoor every time I'll get something relevant (protein powder, chocolate, multivitamin) as a psychological reference, but I can't find any convincing evidence why labdoor should be more reliable and correct than the labels on the products. Do they publish their methodologies? Also for some product types all products fail California heavy metal regulations, and they just give everyone 0 points, instead of publishing exact amount of heavy metal in products. Like, I wanna know if I'm gonna get mercury poisoning if I eat two servings, or is it just above the threshold and should be safe...