http://www1.uegw10.uegf.org/guest/ID14c5615c480c19/AbstractView?ABSID=10961
i had two in my life, my mother two, my sister one and they all performed poorly for all of us giving lower damage than real one at least in one case, so i do believe it is not a gold standard at all
me and my sister are monitoring with fibroscan from a year and since the only mistake can be a result higher then the real damage we do prefer it by far, multuple readings every 6 months can give a much closer result to real damage than biopsy