| Fneg | false negative |
|---|---|
| FNF | false-negative fraction; femoral neck fracture |
| FNFMG | foreign national foreign medical school graduate |
| FNH | focal nodular hyperplasia |
| FNL | fibronectin-like |
| FNP | family nurse practitioner |
| FNR | fibronectin receptor |
| FNRA | fibronectin receptor alpha |
| FNRB | fibronectin receptor beta |
| FNRBL | fibronectin receptor beta-like |