Procalcitonin can be used in the monitoring of infection, but is also high in Stills disease. 89 AOSD pts showed pts w high PCT had more pleuritis, MAS,^LFTs, & correlated w/ Dz activity, CRP, LDH, hi ferritin & normalized w bDMARD Rx. #EULAR2025 abstr #POS1118 https://t.co/NpRA9optd3