I think liver biopsy cant be matched, since our body is so complicated and no one knows a complete system. Hair and liver are 2 different things and dont correspond at all . You see you need to know liver then tissue plus blood. Otherwise you dont know anything. Non invasive liver is the future thing which will solve tons of problems for people. But I doubt they will release that very soon))) Hair and nails are ok for cells analysis, but then you are missing liver and blood. From reading hair you can tell metabolism at 80% . With reading blood and hair, it will be 85%. With ABGS plus liver you can be sure 100%