What is a normal gcs score? The initial score correlates with the severity of brain injury and prognosis. The Glasgow Coma Scale provides a score in the range 3-15; patients with scores of 3-8 are usually said to be in a coma.What does gcs mean medically? The Glasgow Coma Scale (GCS) is a neurological scale which aims to give a reliable and objective way of recording the conscious state of a person for initial as well as subsequent assessment.What does gcs measure? The Glasgow Coma Scale (GCS) is a tool that healthcare providers use to measure a person's level of consciousness. It is most often used when a person has a traumatic brain injury (TBI). A car accident, fall, or being hit on the head with a hard object can cause a TBI.What does a gcs score of 3 mean? The GCS is the summation of scores for eye, verbal, and motor responses. The minimum score is a 3 which indicates deep coma or a brain-dead state. The maximum is 15 which indicates a fully awake patient (the original maximum was 14, but the score has since been modified).