IL6 and atrial fibrillation: Median PCT levels also differed significantly, with 0.47 ng/mL (IQR: 0.07–0.81) in the PJI group and 0.05 ng/mL (IQR: 0.03–0.20) in the AF group.IL-6 levels were markedly elevated in the PJI group, with a median of 1102.50 pg/mL (IQR: 521.00–2805.45), in contrast to 41.81 pg/mL (IQR: 20.94–93.62) in the AF group.