Theranos: a story telling without scientific content?

And this company was recently valued $ 9 billion ? How is it possible?
http://www.medscape.com/viewarticle/863917?nlid=106047_2381&src=WNL_mdplsfeat_160607_mscpedit_surg&uac=7267HX&spon=14&impID=1120477&faf=1