- essential f. [MIM*229800] a benign, asymptomatic inborn error of metabolism due to deficiency of fructokinase, the first enzyme in the specific fructose pathway; fructose appears in the blood and urine, but is simply excreted unchanged; autosomal recessive inheritance. A fructokinase deficiency. SEE ALSO: hereditary fructose intolerance. SYN: benign f., fructokinase deficiency.
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n.
the presence of fructose (levulose) in the urine.
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fruc·to·su·ria (frook″to-suґre-ə) the presence of fructose in the urine, as occurs in hereditary fructose intolerance and essential fructosuria (q.v.).Medical dictionary. 2011.