Clinical Research Directory

Inclusion Criteria: * Adults (18 to 89 years) of all races and ethnicities presenting to the ED * Whole Blood venous samples collected in K2EDTA while the patient was in the ED * First CBC w/diff test ordered within 12 hours of presentation to ED as part of their standard medical care * CBC w/diff tested within 2 hours of specimen collection * Subjects with at least ≥12 hours of follow-up in the ED (or inpatient, if admitted) from presentation Exclusion Criteria: * CBC w/diff test ordered after 12 hours of presentation to ED * Subjects previously enrolled in this study (i.e. subjects may not be enrolled more than once in this study) * Subjects discharged from ED \<12 hours from ED presentation * ED Transfer Patients Data Exclusions Post Enrollment: * Samples that have a system generated flag from the Standard of Care (SOC) CBC w/diff testing will be excluded. * Samples with instrument flags, including vote outs and review flags for MDW will also be excluded (i.e. invalid MDW results). * Subjects' data collected with Instrument Quality Control failure(s).