| GCS | Glasgow Coma Scale |
|---|---|
| GCS | general clinical services; Gianotti-Crosti syndrome; Glasgow Coma Scale; glucocorticosteroid; glutamylcysteine synthetase; glycine cleavage system |
| GCSA | Gross cell surface antigen |
| GCSFR | granulocyte colony-stimulating factor receptor |
| GCSP | glycine cleavage system protein |