| EFC | elastin fragment concentration; endogenous fecal calcium; ephemeral fever of cattle |
|---|---|
| FBA | fecal bile acid |
| FCRA | fecal collection receptacle assembly; Fellow of the College of Radiologists of Australasia |
| FCS | faciocutaneoskeletal syndrome; fecal containment system; feedback control system; fetal calf serum; ... |
| FDBL | fecal daily blood loss |