| Abbreviation | Definition |
|---|---|
| GC | gas chromatography |
| gc | gonococcus (gonnorhea germ) |
| GCCP | Good Cell Culture Practice |
| GCLA | Government Chemist Laboratory Agency |
| GCLO | Gastric Campylobacter-Like Organism |
| GCLP | good clinical laboratory practice |
| GCLP | Good Clinical Laboratory Practices |
| GCRL | Gulf Coast Research Laboratory |
| GDF | Growth And Differentiation Factor |
| GDL | Gas Dynamics Laboratory |
| GDLL | Grace Drake Land Laboratory |
| GEREFLUX | GastroEsophageal Reflux scan |
| GF | Gluten Free |
| GFOBT | Guaiac Fecal Occult Blood Test |
| GFP | Gel Filtered Platelets |
| GFP | Gel-Filtered Platelets |
| GFP | Green Fluorescent Protein |
| GFP | green-fluorescent protein |
| GFSL | Guyana Forensic Science Laboratory |
| gG | Glycoprotein G |