Fractional
131fractional excretion of sodium — (FENa) an assessment of acute renal failure comparing the renal clearance of sodium with the creatinine clearance: expressed as a per cent, where PCr = plasma concentration of creatinine, PNa = plasma concentration of sodium, UCr = urinary… …
132fractional sterilization — intermittent sterilization destruction of microbial viability by successive application of the procedure at intervals, to allow spores to develop into vegetative forms, which are more easily destroyed …
