Ab0344 #ACR22 CKD2+ a/w incr HCQ levels by 149 ng/mL vs CKD1 400 mg/d dose: incr HCQ levels by 448 ng/mL vs 200 Incr body wt by 15 kg -> decr HCQ levels by 82 ng/mL Social determinants didn't effect data >750ng/mL and >1000 predicted of 75% decr flare risk @Rheumnow #ACRBest https://t.co/p21rqnO4ym