Shown are forest plots and adjusted HRs (aHRs) of all 66 tested biomarkers and their association with mortality during COVID-19 by multivariable analysis, irrespective of when the first sample was collected relative to the hospital admission when adjusting for (left panel) the time of sample collection relative to hospital admission or (right panel) the time of sample collection relative to hospital admission with age, chronic kidney disease, and receipt of immunomodulatory medications. For biomarkers significantly associated with mortality (i.e., q < 0.025), aHR CIs are shown in red.