F
| FBS | Fasting blood sugar | 
| FECG, FEKG | Fetal electrocardiogram | 
| FH | Family history | 
| FHR | Fetal heart rate | 
| FHT | Fetal heart tone | 
| FS | Frozen section | 
| FSH | Follicle-stimulating hormone | 
| FTND | Full-term normal delivery | 
| FVC | Forced vital capacity | 
| Fx | Fracture | 
| FBS | Fasting blood sugar | 
| FECG, FEKG | Fetal electrocardiogram | 
| FH | Family history | 
| FHR | Fetal heart rate | 
| FHT | Fetal heart tone | 
| FS | Frozen section | 
| FSH | Follicle-stimulating hormone | 
| FTND | Full-term normal delivery | 
| FVC | Forced vital capacity | 
| Fx | Fracture |