HCQ improves complements A#2327 #ACR23 @RheumNow Petri @jhrheumatology @andreafava Pts w/ low complement & low HCQ levels In pts who increased HCQ WB level >50 ng/mL, incr in mean C3 (p=0.02) v HCQ that did not incr More nml C4 levels (p=.003) and incr mean C4 (p=.004) on HCQ https://t.co/J7PIuaRTO8