You just got a letter that says the emergency team recorded a "GCS of 13" after a crash, and now you are trying to figure out whether that number means something serious. The Glasgow Coma Scale is a quick medical scoring system used to measure a person's level of consciousness after a head injury or other medical emergency. It looks at three things: eye opening, verbal response, and motor response. The total score ranges from 3 to 15, with higher scores generally showing better awareness and response. A lower score can suggest a more severe brain injury, reduced consciousness, or the need for urgent monitoring.

In practice, this score often shows up in ambulance records, ER notes, and trauma evaluations. It helps doctors and paramedics track whether someone is improving, staying the same, or getting worse. It is only one part of the picture, though. A Glasgow Coma Scale score does not replace brain imaging, a full neurological exam, or a final diagnosis such as traumatic brain injury or concussion.

For an injury claim, the score can matter because it creates an early record of how impaired someone was right after the event. Insurers may use it to argue the injury was mild if the score was high, while your side may use it alongside symptoms, scans, and follow-up care to show the real impact. In Arizona, the statute of limitations for most personal injury claims is generally two years under A.R.S. § 12-542, so those records should be preserved early.