[Biochemical and hematological parameters for the estimation of folate status in man. 3. Importance of formiminoglutamic acid excretion in the urine in comparison to other measurements].

In a study on 250 industrial workers the amount of the formiminoglutamic acid excretion in urine was measured by an enzymatic spectrophotometric method. For the estimation of the folacine status the vitamine concentration in serum and erythrozytes was determined as well as the segmentation of the neutrophilic granulocytes. As shown in previous studies these parameters indicate the degree of folate supply. A correlation between the FIGLU excretion in urine and other folate dependent parameters could not be demonstrated. Criterial to judge the folate supply are the radioimmunological determination of folacine concentration in serum and erythrocytes as well as the estimation of the segmentation of the neutrophilic granulocytes.