| FBS | fasting blood sugar; feedback system; fetal bovine serum |
|---|---|
| FCS | faciocutaneoskeletal syndrome; fecal containment system; feedback control system; fetal calf serum; ... |
| FLSP | fluorescein-labeled serum protein |
| FSG | fasting serum glucose; focal segmental sclerosis |
| FSL | fasting serum level |