ACR MTX monitoring guidelines from 1994 (Alarcon et al) -pts should be screened for HBV, HCV, Alb. At AST, ALT should be checked at intervals of every 4-8 weeks. MTX should be stopped/adjusted or liver Bx if AST abnl in 5 of 9 (or 6/12) in 12 mos. https://t.co/8lcPz7sH3F