| FRH | follicle-stimulating hormone-releasing hormone |
|---|---|
| FRP | follicle-stimulating hormone releasing protein; functional refractory period |
| FSH/LR-RH | follicle-stimulating hormone and luteinizing hormone releasing hormone |
| FSH-RF | follicle-stimulating hormone-releasing factor |
| FSH-RH | follicle-stimulating hormone-releasing hormone |