[ F ]

• FFGA  Fonseca and Flaming algorithm
• FFHC  federally funded health center
• FFHom  Fellow of the Faculty of Homeopathy
• FFI  family function index; fatal familial insomnia; free from infection; fundamental frequency indicator
• FFIT  fluorescent focus inhibition test
• FFL  flexible fiberoptic laryngoscopy
• FFM  fat-free mass; friction force microscopy; fundus flavimaculatus
• FFMDXA  fat-free mass dual energy x-ray absorptiometry
• FFMHYD  fat-free mass hydrodensitometry
• FFOM  Fellow of the Faculty of Occupational Medicine
• FFP  freedom from progression; fresh frozen plasma
• FFQ  food frequency questionnaire
• FFR  Fellow of the Faculty of Radiologists
• FFROM  full and free range of motion
• FFS  failure-free survival; fat-free solids; fee for service; femoro-facial syndrome
• FFT  fast Fourier transform; finite Fourier transform; flicker fusion test or threshold
• FFU  femur-fibula-ulna [syndrome]; focal forming unit
• FFV  feline foamy virus; fruit fly virus
• FFW  fat-free weight
• FFWC  fractional free water clearance
• FFWW  fat-free wet weight
• FG  fasciculus gracilis; fast-glycolytic [fiber]; Feeley-Gorman [agar]; fibrinogen; Flemish giant [rabbit]
• fg  femtogram; flammable gas detector
• FGA  fibrinogen alpha
• FGB  fibrinogen beta
• FGC  fibrinogen gel chromatography
• FGD  fatal granulomatous disease
• FgDP  fibrinogen degradation products
• FGDS  fibrogastroduodenoscopy
• FGDY  faciogenital dysplasia
• FGF  father's grandfather; fibroblast growth factor; fresh gas flow
• FGF1  fibroblast growth factor 1 [acidic]
• FGF2  fibroblast growth factor 2 [basic]
• FGFA  fibroblast growth factor, acidic
• FGFB  fibroblast growth factor, basic
• FGFR  fibroblast growth factor receptor
• FGG  fibrinogen gamma; focal global glomerulosclerosis; fowl gamma-globulin
• FGGM  finite generalized gaussian mixture
• FGH  formylglutathione hydrolase
• FGL  fasting gastrin level; fasting glucose level
• FGM  father's grandmother; female genital mutilation
• FGN  fibrinogen; focal glomerulonephritis; fractional gaussian noise
• FGP  fundic gland polyp
• FGR  familial glucocorticoid resistance; finite time growth
• FGS  fibrogastroscopy; focal glomerular sclerosis; formal genesis syndrome
• FGT  fluorescent gonorrhea test
• FH  facial hemihyperplasia; familial hypercholesterolemia; familial hypertension; family history; fasting hyperbilirubinemia; favorable histology; femoral hernia; femoral hypoplasia; femur head; fetal head; fetal heart; fibromuscular hyperplasia; field hospital; flat hyperplasia; follicular hyperplasia; Frankfort horizontal [plane]; fumarate hydratase
• FH⁺  family history positive
• FH^-  family history negative
• FH₄  tetrahydrofolic acid
• fh  fostered by hand [experimental animal]
• FHA  familial hypoplastic anemia; Fellow of the Institute of Hospital Administrators; filamentous hemagglutinin
• FHADES  Farm Hazard and Demographic Enumeration Survey
• FHB  flexor hallucis brevis
• FH/BC  frontal horn/bicaudate [ratio]
• FHC  familial hypercholesterolemia; familial hypertrophic cardiomyopathy; family health center; Ficoll-Hypaque centrifugation; Fuchs heterochromic cyclitis
• FHD  familial histiocytic dermatoarthritis; family history of diabetes; femoral head diameter
• FHF  fetal heart frequency; fulminant hepatic failure
• fHg  free hemoglobin
• FHH  familial hypocalciuric hypercalcemia; fawn-hooded hypertensive [rat]; fetal heart heard
• FHI  Fuchs' heterochromic iridocyclitis
• FHIP  family health insurance plan
• FHIS  Farm Health Interview Survey
• FHIT  fragile histidine triad [gene]
• FHL  flexor hallucis longus; Food Hygiene Laboratory [UK]; functional health literacy; functional hearing loss
• FHM  familial hemiplegic migraine; fathead minnow [cells]
• FHN  family history negative
• FHNH  fetal heart not heard
• FHP  family history positive; functional health pattern
• FHPMHP  family history of physical and mental health problems
• FHPSAT  Functional Health Pattern Screening Assessment Tool
• FHR  familial hypophosphatemic rickets; fetal heart rate
• fH-R  factor H receptor
• FHRDC  family history research diagnostic criteria
• FHRNST  fetal heart rate nonstress test
• FHRS  Familial Hypercholesterolemia Regression Study
• FHS  Family Heart Study; fetal heart sound; fetal hydantoin syndrome; Floating Harbor syndrome; Framingham Heart Study
• FH-S  soluble fumarate hydratase
• FHSA  Family Health Service Authority [UK]
• FHSD  family history of sudden death
• FHT  fast Hartley transform; fetal heart; fetal heart tone
• FHTG  familial hypertriglyceridemia
• FH-UFS  femoral hypoplasia-unusual facies syndrome
• FHV  falcon herpesvirus; flock house virus
• FHVP  free hepatic vein pressure
• FHx  family history
• FI  fasciculus intrafascicularis; fever caused by infection; fibrinogen; fixed interval; flame ionization; follicular involution; food intolerance; forced inspiration; frontoiliac; full scan with interpolation
• FIA  fistula in ano; fluorescent immunoassay; focal immunoassay; Freund incomplete adjuvant
• FIAC  2´-fluoro-5-iodo-aracytosine
• FIB  Fellow of the Institute of Biology; fibrin; fibrinogen; fibrositis; fibula
• fib  fiber; fibrillation; fibrin; fibrinogen; fibula
• FIC  finite-sample information criterion; Fogarty International Center; fractional inhibitory concentration
• FICA  Federal Insurance Contributions Act; fluoroimmunocytoadherence
• FicCV  Ficus carica virus
• FICD  Fellow of the Institute of Canadian Dentists; Fellow of the International College of Dentists
• FiCO₂, FI_CO2  fractional concentration of carbon dioxide in inspired gas
• FICS  Fellow of the International College of Surgeons
• FICSIT  Frailty and Injuries: Cooperative Studies of Intervention Techniques
• FICU  fetal intensive care unit
• FID  flame ionization detector; free induction decay; fungal immunodiffusion
• FIDD  fetal iodine deficiency disorder
• FIELD  Fenofibrate Intervention and Event Lowering in Diabetes [trial]
• FIF  feedback inhibition factor; fibroblast interferon; forced inspiratory flow; formaldehyde-induced fluorescence
• FIF₅₀  forced inspiratory flow at 50% of forced vital capacity
• FIFO  first in, first out
• FIFR  fasting intestinal flow rate
• FIFRA  Federal Insecticide, Fungicide, and Rodenticide Act
• FIG  Flosequinan Investigator Group
• FIGD  familial idiopathic gonadotropin deficiency
• FIGE  field inversion gel electrophoresis
• FIGLEAF  Fine Grained Lexical Analysis Facility
• FIGLU, FIGlu  formiminoglutamate, formiminoglutamic acid
• FIGLU-uria  formiminoglutaminaciduria
• FIGO  International Federation of Gynecology and Obstetrics [Federation Internationale de Gynecologie et d'Obstetrique]
• FIH  familial isolated hypoparathyroidism; fat-induced hyperglycemia
• fil  filament; filial
• filt  filter, filtration
• FIM  familial infantile myasthenia; field ion microscopy; fimbria; fluorescence imaged microdeformation; functional independence measure
• FIMG  familial infantile myasthenia gravis
• FIMLT  Fellow of the Institute of Medical Laboratory Technology
• FIN  fine intestinal needle
• FINCC  familial idiopathic nonarteriosclerotic cerebral calcification
• FIND  finding [UMLS]
• FINESS  First International New Intravascular Rigid-Flex Endovascular Stent Study
• FINMONICA  Finnish Monitoring Trends and Determinants in Cardiovascular Diseases
• FINRISK  Finland Cardiovascular Risk Study
• FINV  Fin V 707 virus
• FI_O2,  forced inspiratory oxygen; fractional concentration of oxygen in inspired gas
• FIO₂, FiO₂  fractional concentration of oxygen in inspired gas
• FIP  feline infectious peritonitis
• FIPA  familial intestinal polyatresia [syndrome]
• FIPS  Federal information processing standards; Frankfurt Isoptin Progression Study
• FIPV  feline infectious peritonitis virus
• FIQ  full-scale intelligence quotient
• FIR  far infrared; finite impulse response; fold increase in resistance; fractional intramural retention
• FIRDA  frontal, intermittent rhythmic delta activity
• FIRM  formal inference-based recursive modeling
• FIRST  Flolan International Randomized Survival Trial
• FIS  fatigue interview schedule; forced inspiratory spirogram; free induction signal
• fis  fission
• FISAC  Federal Information Services and Application Council
• FISH  Finnish Isradipine Study in Hypertension; fluorescence in situ hybridization
• FISP  fast imaging with steady state precision
• FISS  Fraxiparine in Stroke Study
• fist  fistula
• FIT  fluorescein isothiocyanate; Fracture Intervention Trial; fusion inferred threshold
• FITC  fluorescein isothiocyanate
• FIUO  for internal use only
• FIV  feline immunodeficiency virus; forced inspiratory volume
• FIV₁  forced inspiratory volume in one second
• FIVC  forced inspiratory vital capacity
• FIVE  familial isolated vitamin E [deficiency]
• FIV-O  feline immunodeficiency virus (Oma)
• FIV-P  feline immunodeficiency virus (Petaluma)
• FIXAg  factor IX antigen
• FJN  familial juvenile nephrophthisis
• FJRM  full joint range of movement
• FJS  finger joint size
• FK  feline kidney
• FK506  tacrolimus [drug]
• FKBP  FK506 [macrolide] binding protein
• FK-NN  fuzzy K-nearest neighbor [algorithm]
• FKT  Fukunaga-Koontz transform
• FL  false lumen; fatty liver; feline leukemia; femur length; fibers of Luschka; fibroblast-like; filtration leukapheresis; focal length; follicular lymphoma; Friend leukemia; frontal lobe; full liquid [diet]; functional length; fuzzy logic
• FL-2  feline lung [cells]
• Fl  fluid; fluorescence
• fL  femtoliter
• fl  filtered load; flexion, flexible; flow; fluid; fluorescent; flutter; foot lambert
• FLA  fluorescent-labeled antibody; left frontoanterior [fetal position]
• FLAC, FL/AC  femur length/abdominal circumference [ratio]
• flac  flaccidity, flaccid
• FLAIR  fluid attenuated inversion recovery
• FLAIR-FLASH  fluid-attenuated inversion recovery-fast low angle shot
• FLAK  flow artifact killer
• FLAP  5-lipoxygenase activating protein
• FLARE  Fluvastatin Angioplasty Restenosis [trial]
• FLASH  fast low angle shot
• FLAV  Flanders virus
• FLC  family life cycle; fatty liver cell; fetal liver cell; Fourier linear combiner; Friend leukemia cell
• FlCV  flame chlorosis virus
• FLD  fibrotic lung disease; field hospital; Fisher's linear discriminate [pattern classification]
• fld  fluid
• fl dr  fluid dram
• FLDV  flounder lymphocystis disease
• FLE  fiducial localization error
• FLEQUIN  Flecainide Compared to Oral Quinidine [study]
• FLEV  Flexal virus
• FLEX  Federation Licensing Examination
• flex  flexor, flexion
• FLEXOR  Focused Lesion Expansion Optimizes Result [trial]
• FLG  filaggrin
• FLIC  functional living index-cancer
• FLICC  Federal Library and Information Center Committee
• FLK  funny looking kid
• FLKS  fatty liver and kidney syndrome
• FLM  fasciculus longitudinalis medialis; fraction of labeled mitosis
• FLO  Fourier linear combiner
• floc  flocculation
• Flops  floating point operations per second
• fl oz  fluid ounce

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