| RG | right gluteal |
|---|---|
| rG | regular gene |
| RGB | Red, Green, Blue |
| RGBMT | renal glomerular basement membrane thickness |
| RGC | radio-gas chromatography; remnant gastric cancer; retinal ganglion cell; right giant cell |
| RGD | range-gated Doppler |
| RGE | relative gas expansion |
| RGEA | right gastroepiploic artery |
| RGH | rat growth hormone |
| RGI | recovery from growth inhibition |