| GnRH | gonadotropin-releasing hormone |
|---|---|
| GnRHR | gonadotropin-releasing hormone receptor |
| GRA | gated radionuclide angiography; glucocorticoid-remedial aldosteronism; gonadotropin-releasing agent |
| GRF | gastrin-releasing factor; genetically related macrophage factor; gonadotropin-releasing factor; grow... |
| HCG, hCG | human chorionic gonadotropin |