| FXIII | Factor 13, Qual w/reflex to Factor 13 1:1 Mix (ARUP via RPS) |
| F2A | Factor II Assay (Activity) (ARUP via RPS) |
| F2IP | Factor II Inhibitor (RPS) |
| F9AG | Factor IX Antigen (RPS) |
| F9A | Factor IX Assay (Activity) (RPS) |
| F9IP | Factor IX Inhibitor (RPS) |
| F5I | Factor V (5) Inhibitor (RPS) |
| FVACT | Factor V Assay (Activity) (ARUP via RPS) |
| LEYDN | Factor V Leiden Mutation (RPS) |
| FVLR | Factor V Leiden w/ Reflex to R2 DNA Analysis (LCH 503853) |
| FVR2DNA | Factor V, R2 Mutation DNA Analysis (RPS) |
| F7I | Factor VII (7) Inhibitor (RPS) |
| FVAC | Factor VII Assay (Activity) (ARUP via RPS) |
| F8AG | Factor VIII Antigen (QUEST via RPS) |
| F8 | Factor VIII Assay (Activity) (RPS) |
| F8IB | Factor VIII Inhibitor (RPS) |
| FXAC | Factor X Assay (Activity) (ARUP via RPS) |
| F10CHR | Factor X Chromogenic (RPS) |
| FAXI | Factor XI Assay (Activity) (ARUP via RPS) |
| F12A | Factor XII Assay (Activity) (RPS) |
| FHPAN | Familial Hypercholesterolemia Panel, Sequencing (ARUP via RPS) |
| MEFVS | Familial Mediterranean Fever (MEFV) Sequencing (ARUP via RPS) |
| TTRAS | Familial Transthyretin Amyloidosis (TTR) Sequencing (ARUP via RPS) |
| FADA | Fanconi Anemia, Group C (FANCC) 2 Mutations (RPS) |
| FAPCP | Fatty Acid Profile, Comp (C8-C26) (MAYO via RPS) |
| ESSFA | Fatty Acid Profile, Essential (RPS) |
| FAPS | Fatty Acid Profile, Peroxisomal (C22-C26) (RPS) |
| FFACD | Fatty Acids, Free (RPS) |
| FEBAB | Febrile Antibody Panel (RPS) |
| FBLD3 | Fecal Blood, Three Specimens |
| FCL | Fecal Chloride, Random |
| FNAKCL | Fecal Electrolytes, 24 hr or Random |
| FF24 | Fecal Fat, 24 Hour (RPS) |
| FF48 | Fecal Fat, 48 Hour (RPS) |
| FF72 | Fecal Fat, 72 Hour (RPS) |
| FATS | Fecal Fat, Random (RPS) |
| SFF | Fecal Fat, Semi-Quantitative (RPS) |
| FBLD | Fecal Occult Blood |
| FOBT | Fecal Occult Blood, Colorectal Cancer Screen, Qual (MAYO via RPS) |
| FRED | Fecal Reducing Substances (ARUP via RPS) |
| FELB | Felbamate (RPS) |
| CDFENT | Fentanyl & Metabolite, UR (Confirmation only) (RPS) |
| FENTU | Fentanyl and Analogues, Urine (MEDTOX via RPS) |
| FNTLM | Fentanyl and Metabolite, Serum (RPS) |
| FMUQ | Fentanyl and Metabolite, Urine, Quantitative |
| FENURQ | Fentanyl, Urine Screen w/reflex to Quant (ARUP via RPS) |
| FERI | Ferritin |
| FIBRN | Fetal Fibronectin (RPS) |
| KLBT | Fetal Hgb Stain (Kleihauer-Betke) |
| FIB4R | FIB-4 w/reflex to NASH FibroSure® Plus (LCH 402146) |
| U3RNP | Fibrillarin (U3 RNP) Antibody, IgG (RPS) |
| FDPP | Fibrin Degradation Products, Plasma (ARUP via RPS) |
| FIBRR | Fibrinogen (RPS) |
| FBRA | Fibrinogen Antigen (RPS) |
| FIBAG | Fibronectin Aggregates IgA (RPS to Focus) |
| FIBRO | FibroTest-ActiTest, Serum (MAYO via RPS) |
| FANEU | FISH-Aneuploidy Assay (13,18,21,X,Y) Varies (RPS) |
| FLEC | Flecainide Level, (Tambocor) |
| FLOW | Flow Cytometry (Cell Surf Mark) |
| FLUCON | Fluconazole, Quantitative (RPS) |
| FLUN | Flunitrazepam and Metabolites (Rohypnol) (RPS) |
| FLUNU | Flunitrazepam and Metabolites (Rohypnol), Urine (RPS) |
| FTACSF | Fluorescent Treponema Antibody, CSF (RPS) |
| FL | Fluoride Quantitative (RPS) |
| FLRDU | Fluoride Quantitative, Urine (RPS) |
| FROC | Fluoroquinolone-Resistant Organism, Culture (ARUP via RPS) |
| FLUO | Fluoxetine (Prozac) (RPS) |
| FLUP | Fluphenazine (Prolixin) (RPS) |
| LUVX | Fluvoxamine (Luvox) (RPS) |
| AP FNA AdrenGlnd | FNA Adrenal Gland |
| FNAAssistedP | FNA Assisted |
| AP FNA BRST | FNA Breast |
| FNACellBlo[i | FNA Cell Block Prepared [i] |
| AP FNA KDNY | FNA Kidney |
| AP FNA LVR | FNA Liver |
| AP FNA LNG | FNA Lung |
| AP FNA LYM NODE | FNA Lymph Node |
| AP FNA OTH | FNA Other Site |
| AP FNA PANC | FNA Pancreas |
| AP FNA PARO | FNA Parotid Gland |
| AP FNA THYR | FNA Thyroid |
| FOL | Folate, Serum |
| VFOL | Folic Acid (RPS) |
| VBFA | Folic Acid & Vitamin B12 (RPS) |
| AFCOMP | Food Allergens Comprehensive Profile 1 (RPS) |
| FRNSDRG | Forensic Drug Screen (10 Panel), Blood (NMS 1874B) |
| Formletter | Form Letter |
| FRGX | Fragile X by PCR (RPS) |
| TULAR | Francisella tularensis Abs, IgG and IgM (RPS) |
| FE2 | Free Estradiol by ED/LC-MS/MS (RPS) |
| HGFP | Free Hemoglobin, Plasma (RPS) |
| FKLU | Free Kappa/Lambda Light Chain, Quant, Urine (ARUP via RPS) |
| FT3E | Free T3 |
| FT4MS | Free T4, Equilibrium Dialysis/Mass Spectrometry (RPS) |
| FT4 | Free Thyroxine (T4) |
| THYL | Free Thyroxine Index Panel (RPS) |
| FRU | Fructosamine (ARUP via RPS) |
| FSHS | FSH |
| FTA | FTA ABS IgG (RPS-Confirmation) |
| FABQ | Fungal Antibodies (RPS) |
| FUNBL | Fungal Culture, Blood (RPS) |
| FUNID | Fungal ID (RPS) |
| KOHP | Fungal Stain-KOH w/Calcofluor White (RPS) |
| FUNGTL | Fungitell (1,3 Beta D Glucan) RPS |
| FUNCU | Fungus Culture (RPS) |
| FUNDCU | Fungus Culture, Hair/Skin/Nails (RPS) |
| LSIX | Furosemide (Lasix), Quantitative (RPS) |
