Wallach's Interpretation of Diagnostic Tests: Pathways to Arriving at a Clinical Diagnosis (1461 page)

Febrile nonhemolytic transfusion reactions (FNHTR)

Fecal fat

Fecal leukocytes

colitis

diarrhea

diarrheal syndrome

Fecal occult blood test (FOBT).
See
Occult blood, stool

Felty’s syndrome

anti-CCP antibodies

antineutrophil cytoplasmic antibodies (ANCAs)

antinuclear antibodies (ANAs)

C-reactive protein (CRP)

erythrocyte sedimentation rate (ESR)

rheumatoid arthritis (RA)

rheumatoid factor (RF)

splenomegaly

vasculitis

FENa.
See
Fractional excretion of sodium (FENa)

Fentanyl

Fern test

Ferritin

β-thalassemia major

fatty liver

IOD

lower GI bleeding, acute

microcytic anemias

normocytic anemias

PNH

renal cell carcinoma

sickle cell disease

systolic dysfunction with heart failure

Fetal biopsy.
See also
Prenatal testing

Fetal blood sampling

Fetal chromosome abnormalities

Fetal death in utero

clinical presentation

diagnosis

risk factors

Fetal fibronectin test

Fetal Hb (HbF)

acquired aplastic anemia

β chain substitutions

hereditary persistence of fetal Hb

hyperthyroidism

leakage of fetal blood into maternal circulation

leukemia (acute/chronic)

myeloproliferative neoplasms

sickle cell disease

thalassemia

Fetal lung maturity (FLM)

Fetal trisomies

Fetus and placenta.
See also
Obstetric disorders

pregnancy

fFN.
See
Fibronectin, fetal (fFN)

Fibrin degradation products

Fibrinogen (Factor I)

coagulopathy

cryoprecipitate

DIC

factor XIII deficiency

inherited thrombocytopathies

PT

stroke

thrombophilia

TT

Fibrinogen degradation products (FDPs)

AML

DIC

disease induced thrombocytopathies

mechanical hemolysis

Fibrinolysis

factor VIII

platelet aggregation

reptilase time

thrombin time

Fibronectin, fetal (fFN)

Fifth disease.
See
Parvovirus B19

First trimester of pregnancy

genetic testing for CF

maternal triple screen

prenatal testing

FISH.
See
Fluorescence in situ hybridization (FISH)

Fish tank granuloma

FL.
See
Follicular lymphoma (FL)

FLAER.
See
Fluorescently labeled aerolysin (FLAER)

Flat warts

Fletcher factor

PT

PTT

FLM.
See
Fetal lung maturity (FLM)

Flow cytometry

clinical evaluation of hematological diseases

HIT

paroxysmal nocturnal hemoglobinuria

PNH

trophoblastic disease

Flucytosine

Fluid culture, body

Fluorescence in situ hybridization (FISH)

pancytopenia

prenatal screening

trisomy 13

trisomy 18

trisomy 21

Fluorescently labeled aerolysin (FLAER)

Fluorogenic staining methods

FMF.
See
Familial mediterranean fever (FMF)

FNHTR.
See
Febrile nonhemolytic transfusion reactions (FNHTR)

Focal neurologic deficits.
See
Peripheral nerve system disorders

Focal segmental glomerulosclerosis (FSGS)

Folate/folic acid

deficiency

anemia

macrocytic anemia

neutropenia

serum and erythrocytes

sickle cell disease

Follicle-stimulating hormone (FSH)

disorders of sperm transport

hirsutism

hypopituitarism

LH

multiple gestations

ovulatory disorders

pituitary tumors

Follicular lymphoma (FL)

DLBCL

Folling disease.
See
Phenylketonuria (PKU)

Forensic toxicology

FOXL2

Fractional excretion of sodium (FENa)

acute tubular necrosis

interstitial nephritis

FRDA.
See
Friedreich ataxia (FRDA)

Fragile X mental retardation 1 (FRM1) gene

Fragile X syndrome

intellectual disability

FRM1.
See
Fragile X mental retardation 1 (FRM1) gene

Francisella tularensis

culture (rule out)

infection

Free light chain immunoassay

HCDD

LHCDD

PCL

plasmacytoma

Free T
⁴

hypothyroidism

pituitary tumors

thyrotoxicosis

Free testosterone

Friedreich ataxia (FRDA)

Frontotemporal dementia (FTD)

Fructosamine, serum

Fructose, semen.
See
Semen fructose

FSGS.
See
Focal segmental glomerulosclerosis (FSGS)

FSH.
See
Follicle-stimulating hormone (FSH)

FT
⁴
.
See
Thyroxine, free (FT
⁴
)

FTD.
See
Frontotemporal dementia (FTD)

Fungal culture, chromogenic agar

Fungal diseases

blood culture

culture

Fungal wet mount

Fusariosis

Fusobacterium nucleatum

G

GABHS.
See
Group A beta-hemolytic streptococcus (GABHS)

Galactocerebrosidase deficiency.
See
Krabbe disease

Galactomannan,
Aspergillus

Galactorrhea

beta-HCG level

causes of

Chiari-Frommel syndrome

Cushing syndrome

herpes zoster

hirsutism

hypothyroidism

imaging studies

oral contraceptive pills (OCPs)

polycystic ovary syndrome (PCOS)

prevalence

prolactin

signs and syndromes

TSH

Galactose-1-phosphate uridyltransferase (GALT)

Gallbladder

and bile ducts, cancer

and biliary tree diseases, (
See also
Abdominal Pain)

bilirubin stones, β-thalassemia major

Gallstone ileus

GALT.
See
Galactose-1-phosphate uridyltransferase (GALT)

Gamma globulin

Gamma glutamyl transferase (GGT)

abnormal liver function tests, CHF

acute liver failure (ALF)

cholestasis

intrahepatic obstructive (cholestasis)

Gardnerella vaginalis

genital culture

molecular probe, vaginitis panel

vaginitis

GAS.
See
Group A
Streptococcus
(GAS)

Gas gangrene and cellulitis

Gastric acid studies, nonatrophic (type B gastritis)

Gastric carcinoids, atrophic (type A gastritis)

Gastrin

Gastritis, chronic

atrophic

causes

nonatrophic

Gastroenteritis

Bacillus cereus

Campylobacter
spp.

enteric viruses

eosinophilic

Salmonella
spp.

Shigella
spp.

Staphylococcus aureus

Gastroesophageal reflux disease (GERD)

chest pain

dyspepsia

Gastrointestinal (GI) bleeding

acute (lower), ferritin

iron deficiency anemia

lower tract (adult), acute

diagnostic evaluation

differential diagnosis

PT

PUD

in small intestine

differential diagnosis

neoplasms, by primary diseases

upper tract (adult)