The Correlation Between Total Protein Level in 24-hour Urine Sample and Spot Urine Protein-to-creatinine Ratio in the Old Aged

Abstract

Objective: This study aimed to determine the correlation between the total protein level in the 24-hour urine sample and the protein-to-creatinine ratio in spot urine to measure protein excretion in elderly patients and determine the reliability of protein-to-creatinine ratio in spot urine threshold for proteinuria. Materials and Methods: A total of 50 patients, aged ≥65 years, wıth a spot urıne protein value of ≥15 mg/dL using urine dipstick and without the risk factors for transient proteinuria were included in the study. Daily protein excretion was determined by two different methods-protein-tocreatinine ratio in spot urine and total protein level in the 24-hour urine sample. The correlation between these two methods was evaluated. Results: A strong positive correlation was found between the total protein level in 24-hour urine samples and the protein-to-creatinine ratio in spot urine (r=0.879, p