Test Index - F

Factor VIIIc     see von Willebrand screening
Factor II     see coagulation factor assays
Factor V     see coagulation factor assays
Factor VII     see coagulation factor assays
Factor IX     see coagulation factor assays
Factor X     see coagulation factor assays
Factor XI     see coagulation factor assays
Factor XII    see coagulation factor assays
Factor XIII     see coagulation factor assays
Faecal calprotectin     see calprotectin (faeces)
Faecal elastase     see elastase (faeces)
Faecal fat     no longer routinely available
Faecal occult blood (FOB, faecal immunochemical test for blood, faecal haemoglobin, FIT)
Fibrin degradation products (FDP)   see D-dimers
Fibrinogen (Clauss)   see coagulation screen
Fibroblast growth factor 23     see FGF-23
"Fish odour syndrome"     see trimethylaminuria
FIT     see faecal occult blood
FOB     see faecal occult blood
Follicle stimulating hormone     see FSH
Fractional excretion of calcium     see calcium (urine)
Fractional excretion of phosphate     see phosphate (urine)
Fractional water, sodium and potassium excretion      see fluid balance profile
Free carnitine     see acylcarnitines
Free fatty acids (non-esterified fatty acids, NEFA)
Free light chains, urine    see Bence Jones protein
Free phenytoin     see phenytoin
Free PSA     see PSA
Free T3 and T4     see TFT
Free testosterone     see testosterone
Free water clearance      see fluid balance profile
Full blood count     see FBC