| Abbreviation | Definition |
|---|---|
| GC | GonoCoccal (Gonorrhea) |
| GCBS | Global Collaboration for Blood Safety |
| GCBS | Global Collaboration for Blood Safety (WHO) |
| GCC | Government Coordinating Council of the Food and Agriculture Sector |
| GCLP | Good Clinical Laboratory Practice |
| GCP | Good Clinical Practice |
| GCPBI | Good Clinical Practice Branch I |
| GCPBI(CDER) | Good Clinical Practice Branch I (CDER) |
| GCPBII | Good Clinical Practice Branch II |
| GCPBII(CDER) | Good Clinical Practice Branch II (CDER) |
| GCPP | Good Clinical Practice Program |
| GCPP(OC) | Good Clinical Practice Program (OC) |
| GCRC | General Clinical Research Center |
| GCRC | General Clinical Research Centers |
| GCSL(CFSAN) | Gulf Coast Seafood Laboratory (Dauphin Island, Alabama) (CFSAN) |
| GDEA | Generic Drug Enforcement Act of 1992 |
| GDS | Global Distribution System |
| GDUF | Generic Drug User Fees |
| GEBAT | Government Excess Baggage Authorization Ticket |
| GeMCRIS | Genetic Modification Clinical Research Information System |