Complements & HCQ? (Prof Petri et al) Significant ⬆️ in C3 (p=0.022) & C4 (p=0.003) levels with HCQ whole blood levels >50 ng/mL Increasing blood levels of HCQ significantly assocd w/⬆️prob of achieving normal C4 Improving C3,C4; addtl benefit of HCQ? #ACR23 ABST2327 @RheumNow https://t.co/5ucpXq9ngb