Drug rechallenge following drug‐induced liver injury
Christine M. Hunt, Julie I. Papay, Vid Stanulovic, Arie Regev – 13 March 2017 – Drug‐induced hepatocellular injury is identified internationally by alanine aminotransferase (ALT) levels equal to or exceeding 5× the upper limit of normal (ULN) appearing within 3 months of drug initiation, after alternative causes are excluded. Upon withdrawing the suspect drug, ALT generally decrease by 50% or more. With drug readministration, a positive rechallenge has recently been defined by an ALT level of 3‐5× ULN or greater.