A Comparison of the Spot Urine Protein-Creatinine Ratio with 24-h Urinary Protein for Quantification of Proteinuria: A Hospital-based Cross-sectional Study
SAUDI JOURNAL OF KIDNEY DISEASES AND TRANSPLANTATION(2023)
摘要
Quantifying the amount of proteinuria is mandatory in various disease conditions. The aim of this study was to study whether the spot urine protein-creatinine ratio (P-CR) correlates well with 24-h urinary total protein (UTP). The research hypothesis was that spot urine P-CR would correlate well with 24-h UTP. This was a cross-sectional, single-center study conducted in a tertiary care hospital. The spot urinary P-CR and 24-h urinary protein were determined from 70 patients with persistent glomerular proteinuria. This study included Nepalese patients aged 2-83 years, with a mean age of 36.56 years (standard deviation: 20.78). The number of males was slightly higher than females, and the male-female ratio was 1.26:1. Hypertension was present in 44.3% of patients, diabetes was present in 20% of patients, 74.3% of patients were suffering from acute glomerulonephritis with various causes, and 12.9% of patients had chronic kidney disease. A linear relationship existed between the spot urine P-CR and the 24-h UTP, with a correlation coefficient of 0.877 (P <0.01). The correlation was suboptimal at higher levels of protein excretion (>3.5 g/day). Random spot urine P-CR correlated well with the 24-h UTP, particularly at lower levels of protein excretion.
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