[Urinary calcium, magnesium and uric acid in normal children].
In a group of 327 normal children, aged 4 to 11, we measured Calcium (Ca) and Creatinine (Cr) in the second morning urine. In 226 of them, Magnesium (Mg) and Uric Acid (UA) were also calculated. Means and SD were respectively Ca/Cr: 0.11 +/- 0.09, Mg/Cr: 0.10 +/- 0.03, Mg/Ca: 1.56 +/- 1.48 and UA/Cr: 0.093 +/- 0.29. Distribution was not normal, so we used the 97.5 centile for the upper acceptable limit. This value was higher for Ca/Cr (0.37) and different for Mg/Cr (0.17), compared to the previous reports. Our values of Mg/Ca were related to age (p less than 0.01). These results suggest the need for local establishment of normal ranges and a better definition of hypercalciuria and hypermagnesiuria.
Araujo e Sá
G
G
Unidade de Nefrologia Pediátrica, Hospital de Santa Maria, Universidade de Lisboa.
Proença
H
H
Sassetti
L
L
Lopes
S
S
Barros
F B
FB
Rosa
F C
FC
D002118:Calcium / Q000652:urine*; D016009:Chi-Square Distribution; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008274:Magnesium / Q000652:urine*; D008297:Male; D012016:Reference Values; D014527:Uric Acid / Q000652:urine*
D014527:Uric Acid; D008274:Magnesium; D002118:Calcium
Calciúria, magnesiúria e uricosúria em crianças normais.