Has anyone refused the heel pr*ck test on their baby? How imperative is this test and why does the government regulate that the cards containing the blood samples be securely kept on file? Did you/will you hold your baby when this is done or leave the room?

I don't want my bubba jabbed at all and the thought of this test is really stressing me out, but I don't want to be negligent and ignorant on the matter either. I would really like to find out as much as I can on this screening procedure, any info, advice or experiences would help! TIA xox