Blood test may spare some patients unnecessary brain scans after stroke symptoms

This study looked at whether a blood test measuring PS100B levels can help rule out stroke in people with symptoms like weakness, dizziness, or speech problems that started more than 24 hours ago. For these patients, brain scans are not urgent, so a reliable blood test could avoid the need for imaging. The study enrolled 179 adults at one hospital in France and compared blood test results to a final diagnosis made by experts who didn't know the test results.