Among the COVID-19 patients, IL-8 levels were highest in COVID-19 patients who subsequently experienced a thrombotic event or died (median [IQR]: 246.00 pg/mL [139.25, 432.75] versus 179.00 pg/mL [80.00, 327.00], p = .006, Table 1). Here, CXCL8 is linked to COVID-19.