In this study: 💊No correlation bet QTc interval & whole blood HCQ level regardless of dose, CKD or abnormal TTEs in #lupus pts 💊+correlation bet QTci & HCQ levels in pts w/ QTc prolonging drugs but not >456ms Reassuring, dispels concern on HCQ use @RheumNow #ACR21 abs1743 https://t.co/kpASRAXJB1