Comparison between the 3- and the 24-hour urine collection for creatinine clearance
Roberti Riera, E.; de Almeida-Rego Filho, E.; Dos Santos-Coimbra, M.; Velásquez Jones, L.; Gordillo Paniagua, G.; Betancourt Monzń, C.
Boletin Medico del Hospital Infantil de Mexico 32(3): 435-440
1975
ISSN/ISBN: 0539-6115 PMID: 1138715 Document Number: 95145
Endogenous creatinine clearance was studied in thirty children with various renal diseases and variable degrees of functional deterioration. Two different procedures or urine collection were used on each child: 1) twenty-four-hour urine collection with one blood sample and immediately afterwards 2) three one-hour consecutive periods of urine collection, with one previous blood sample (the one used for the 24-hour procedure). Both procedures were carried out during hydration of the patient and creatinine was determined with the autoanalyzer in urine and blood samples. The results obtained with both procedures did not show significant difference. The three-hour periods procedure may be recommended for hospitalized patients, specially infants or young children, and also when the parents are not reliable enough for hydrating the patients and for performing a complete collection of urine in a 24 hour period.