igf-1 lr3 human trial Recombinant Human LR3 IGF-I/IGF-1 Protein,
Description
Cd, Cadmium

Transl Psychiatry 6(6):e844

So reputable clinics will screen for that

Proteolysis and protein metabolism (15%), signaling (13%), immune system (11%), and metabolic process (8%) were the other prevailing cellular functions enriched for the sperm proteins with differential abundance in hypogonadism

A practical note from the clinic: more isnt always better
