Lab Test Directory—Saint Luke's Regional Laboratories
| FENT SCRN U | Fentanyl Urine Qualitative |
| FER | Ferritin, Serum |
| FBSCREEN | Fetal Bleed Screen, Blood |
| FFN | Fetal Fibronectin |
| FIBRINOGEN | Fibrinogen |
| FIB AG | Fibrinogen Antigen |
| FIBRO GF | Fibroblast Growth Factor 23 (FGF-23) |
| FILARIA AB | Filaria IgG4 Antibody |
| BLD PARA | Filaria, Blood |
| FISH - BM (for Bone Marrow) REF MISC (for blood) | FISH To Mayo |