Inclusion Criteria:  Subject is willing and able to provide informed consent > 18 years of age Whole blood specimen collected in EDTA anticoagulant tubes Minimum volume of 100µL for Symphony IL-6 testing Specimen is available for testing within 12 hours from collection C-Reactive Protein (CRP) < 10 mg/L  Exclusion Criteria:  Subjects presenting with a fever Subjects with a diagnosis of COVID-19 or other respiratory illness at the time of collection Subjects otherwise self-reported as unhealthy Hemolyzed specimens