The LVOne point-of-care test measures d-dimer and GFAP (glial fibrillary acidic protein), biomarkers associated with thrombotic and hemorrhagic stroke, enabling biologically informed triage.<h4>Methods</h4>We validated a new version of the LVOne assay using plasma samples from 210 suspected stroke patients presenting within 6 hours of symptom onset, enrolled in the TIME (Testing of Identification Markers for Stroke) prospective observational cohort. Here, GFAP is linked to hemorrhagic stroke.