A STUDY OF URINARY RIBOFLAVIN EXCRETION IN MAN 1

Abstract

[longdash]Five patients consuming riboflavin-low diets and 2 patients on a hospital diet showed marked variation in the daily urinary riboflavin excretion which could be correlated with the dietary intake of riboflavin. Riboflavin saturation tests demonstrated a lack of correlation between the amt. of the test dose of riboflavin retained and the daily urinary riboflavin excretion. Therefore, no diagnostic value could be attached to these saturation tests. A very rapid loss of riboflavin through the urine was observed after inj.