Glial Fibrillary Acid Protein (GFAP), Plasma Labcorp test 484440

This test measures the level of Glial Fibrillary Acidic Protein (GFAP), a substance released into the blood when specific support cells in the brain are injured. It helps show whether there is active damage or inflammation in the nervous system, which is often checked after head trauma or in suspected neurological decline.