The Glasgow Coma Scale (GCS) is the most widely used scoring system that determines the level of consciousness of an individual with suspected or confirmed brain injury.

For values, the lowest value that can be obtained with the Glasgow scale is 1 point, while the highest value is 15 points.

Total score: 1 to 15
3 = Deep Coma;
4 = Deep Coma;
7 = Intermediate Coma;
11 = Superficial coma;
15 = Normality.

Classification of traumatic brain injury
1-8 = Serious;
9-12 = Moderate;
13-15 = Light.