This is a prospective multi-center observational study which purpose is to evaluate the ability of blood-based inflammatory markers to risk-stratify patients hospitalized for Covid-19. Blood-based biomarkers examined include: soluble urokinase plasminogen activator receptor (suPAR), C-reactive protein (CRP), procalcitonin, D-dimer, ferritin, lactate dehydrogenase and interleukin-6.

All consecutive patients hospitalized specifically for Covid-19 at the University of Michigan in Ann Arbor from February 1st, 2020 to date are included. Other participating centers will enroll patients depending on their variable capacity. Patients with a positive test for SARS-CoV-2 but hospitalized for non-Covid-19 reasons were excluded. Blood-based biomarkers including soluble urokinase plasminogen activator receptor (suPAR), C-reactive protein (CRP), procalcitonin, D-dimer, ferritin, lactate dehydrogenase and interleukin-6 are measured in samples collected within 48 hours of presentation. The primary outcome of the study is the composite endpoint of in-hospital mortality, need for mechanical ventilation and need for renal replacement therapy.

Inclusion Criteria:

• Positive SARS-CoV-2 test result
• Covid-19 as the primary reason for hospitalization

Exclusion Criteria:

• Hospitalized primarily for non-Covid-19 reasons

Adult patients hospitalized primarily for Covid-19

Due to consent waiver, individual participant data cannot be shared with investigators outside the University of Michigan