ine ▁trans amin ase ▁( AL T ). ▁A LT ▁is ▁used ▁in ▁a ▁second ▁assess ment ▁called ▁Act i Test ▁that ▁is ▁part ▁of ▁F ib ro Test . ▁ ▁The ▁equation ▁for ▁calculating ▁the ▁F ib ro Test ▁score ▁regression ▁coefficient ▁( log istic ▁regression ) ▁is : ▁ ▁where ▁B = 1 ▁for ▁male ▁and ▁B = 0 ▁for ▁female . ▁The ▁score ▁( between ▁ 0 ▁and ▁ 1 ) ▁is ▁then ▁▁ ▁Due ▁to ▁vari ability ▁of ▁components ▁ass ays ▁and ▁analyz ers , ▁F ib ro Test ▁ass ays ▁can ▁only ▁be ▁performed ▁in ▁valid ated ▁labor ator ies . ▁F ib ro Test ▁cannot ▁be ▁used ▁without ▁algorithms ▁that ▁detect s ▁false ▁posit ives ▁and ▁false ▁neg atives ; ▁the ▁equation ▁alone ▁is ▁not ▁a ▁diagn osis ▁tool . ▁ ▁The ▁labor atory ▁or ▁phys ician ▁connect s ▁to ▁the ▁Bio Pred ict ive ▁website ▁for ▁calculation ▁of ▁the ▁test ▁results ▁and ▁prints ▁the ▁results ▁sheet , ▁which ▁is ▁available ▁immediately ▁and ▁is ▁accompanied ▁by ▁an ▁interpretation ▁aid ▁and ▁pre ca utions ▁for ▁use . ▁ ▁App lic ability ▁Over ▁ 9 5 % ▁of ▁tests ▁are ▁interpre table ▁and ▁allow ▁a ▁diagn osis ▁of ▁fib ros is ▁and ▁li ver ▁activity . ▁In ▁less ▁than ▁ 5 % ▁of ▁cases , ▁likely ▁false ▁posit ives ▁or ▁false ▁neg atives ▁are ▁highlight ed . ▁F ib ro Test ▁has ▁been ▁valid ated ▁for ▁chron ic ▁he pat itis ▁C , ▁chron ic ▁he pat itis ▁B