Resumo

FARIAS, Rosa et al. Correlation between protein/creatinine ratio and 24-hour urine protein in patients with kidney disease. Acta bioquím. clín. latinoam. [online]. 2015, vol.49, n.2, pp.215-220. ISSN 0325-2957.

Quantification of proteinuria in 24-hour urine is frequently used for diagnosis and therapy in patients with chronic kidney disease (CKD); however, accuracy is often lost due to how complicated it is for the patient to collect the sample. Researchers have developed the protein/creatinine ratio (P/C) in sporadic urine as a diagnostic alternative. The objective of this study was to determine if the P/C correlates with proteinuria in 24 hours (ProtU24h) in CKD patients who attended UNILIME UC Center, Valencia-Venezuela. This was a correlational field study. The sample was not probabilistic; it was constituted by 120 patients who met the inclusion criteria and were determined creatinine clearance and proteinuria in 24-hour urine, and P/C ratio in the second urine sample,from April to September 2013. Correlations between variables were established. The ProtU24h correlated significantly with the P/C (r=0.855 ; p=0.000) in proteinuria lower than 3500 mg/24 hours. Additionally, said quotient has the ability to detect high concentrations of ProtU24h. The present study shows that the P/C in sporadic urine is useful in proteinuria lower than the nephrotic range, which simplifies collection of the sample and could lead to a reduction in health expenditure.

Palavras-chave : Proteinuria; Creatinine clearance; Protein/creatinine ratio; Sporadic urine.

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