| FECG | fetal electrocardiogram |
|---|---|
| FECH | ferrochelatase |
| FECO2 | fractional concentration of carbon dioxide in expired gas |
| FECP | free erythrocyte coproporphyrin |
| FECT | fibroelastic connective tissue |
| FECU | factor [VIII] correctional unit |
| FECV | feline enteric coronavirus |
| FECVC | functional extracellular fluid volume |
| FED | fish eye disease |
| FeD | iron deficiency |