Sex-specific differences in free, inorganic sulfate excretion in 24 hours urine of healthy children (author's transl)

Free, inorganic sulfate was determined quantitatively in the 24 h urine of 65 boys and 53 girls (age 6--14 years). The determination of sulfate was carried out by the aid of the spectrophotometric method with barium chloranilate. Results: The following values were obtained for the boys and girls: Boys (ages 6--10 years) 17,66 +/- 11,70 mmol/24 h, girls (6--10 years) 10,70 +/- 10,26 mmol/24 h, boys (10--14 years) 17,40 +/- 12,32 mmol/24 h, girls (10-14 years) 7,26 +/- 8,90 mmol/24 h. No statistical age-specific differences were observed, but the sex-specific investigation revealed that the younger and older boys had a statistical higher excretion of sulfate in 24 h urine as compared to the younger and older girls.