HCQ tx thresholds study by Prof Garg: 🔸HCQ >=500ng/ml: good threshold to detect adherence 🔸HCQ 750-1000ng/ml: effective thresholds to prevent flares 🔸CKD>=2: 4x ⬆️odds of HCQ>1500ng/ml (supraTx! dose adj.) Interesting data. Game changing?🧐 #ACR22 @RheumNow ABST#0344 #ACRBest https://t.co/GxlucrTeE5