Steroids do NOT hamper muscle Bx dx of ANCA vasculitis. Tokyo study of 126 pts w/ suspected vasculitis had Quad muscle Bx; 71 (+) w/ Dx of AAV. Bx yield in 56 and 15 pts w/ off or on steroids, respectively, was similar (59% vs 53%). https://t.co/Xpt01Wksd3 https://t.co/NSBclcEgwq