[Estimation of vitamin B2 status of organism by means of twenty-four hour riboflavin urinary excretion].

On the basis of examination of dependence of twenty-four hour riboflavin urinary excretion from its blood plasma level, of interrelation between daily and hour riboflavin urinary excretion, and also the analysis of a level of twenty-four hour riboflavin urinary excretion of persons with a normal riboflavin blood plasma level, the criterion of adequate sufficiency with vitamin B2 of adults on daily riboflavin urinary excretion has been determined, its value approximate 1,1 mg per day.