Lab Test Directory—Saint Luke's Regional Laboratories
| FLECAINIDE | Flecainide (Tambocor) |
| FLT3 PCR | FLT3 Mutation Analysis, PCR |
| FTA AB - obsolete | Fluorescent Treponemal Antibody |
| FLUOR | Fluoride, Serum |
| FOL | Folate, Serum |
| FSH | Follicle-Stimulating Hormone (FSH), Serum or Plasma |
| FRAGX or FRAGX CAR | Fragile X |
| F TULA ABYS | Francisella tularensis Antibodies |
| FRUC | Fructosamine |
| REF MISC | Fungal Antibodies, CSF |