Hypercalciruia must be diagnosed early and treated adequately since it is an important cause of hematuria and ureter stone and also because it may damage the renal tubules irreversibly and decrease the concentration ability of urine. Until now in
Korea,
there has been only a small number of reports and no useful standards on calciuria. Our study was done to find the normal vaue of the ratio of calcium and to find the normal value of the ratio of calcium and creatinnine in random urine of Korean
children. We studied 464 children in the pediatric department of the Yonsei University hospital who had normal serum levels and no renal and endocrine disease or calcium metabolic adnormalities. Urine collection was done using disposable urine
collector
for chidren under 3 years of age, and urine cup for children over 3 years of age. Urine sodium, creatinine and calcium were evaluated. Analysis was done by PC-SPSS to assess the mean±SD of each age and the differences of each group was conmpared
using
t-test. The results were as follows. Ca/Cr ratio was 0.05±0.09(mean±SD mg/dl) in 0~7d, 0.28±0.24 in 8-30d, 0.22±0.21 n 1-11 mo, 0.20±0.19 in 1-5r, 0.17±0.19 in 6-11 yr and 0.12±0.09 in 12~15 yr group. Comparing ratio in each age group.
0~7d
and
12~15 yr group shoed a difference compared to other group (p<0.05). In conclusion, the Ca/Cr raito in random urine of Korean children showed a difference between the 0~7d, 12~15 yr and other age groups, The normal value of 0~7d grdoup is
0.05±0.09
and
12~15 yr group is 0.12±0.09. the other groups were 0.20±0.20 mg/dl.
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