However, current monitoring tools such as 24-hour urine monitoring, 24-hour dietary recall or food frequency questionaire are impractical because the processes are complicated and subject to error. We have developed a modified 24-hour dietary recall method for assessment of 24-hour dietary protein and sodium intake namely Easy Dietary Assessment (EDA) tool.1 EDA is a visualized calculating table used to calculate amount of dietary intake (Figure 1). The values of protein and sodium content of each recipe in the table were collected from

five provinces throughout Thailand. The average amounts of protein and sodium per one tablespoon were this website calculated by apply the data from a Thai nutritional database software namely INMU-Cal program. We aimed to validate

accuracy and precision of this tool in CKD patients. Methods: We conducted a cross-sectional study in fifty-five stage 3–4 CKD patients from Kamphaeng Phet JQ1 Province, 400 kilometers north of Bangkok. Village Health Volunteers (VHVs) were asked to work as interviewers. They had been trained for a 4-day course on how to use EDA tool prior to commencement of the study. The patients were asked to collect 24-hour urine for urine urea-N and sodium. Adequately collected 24-hour urine samples were calculated for normalized protein nitrogen appearance (nPNA) and 24-hour urine sodium. We studied correlation between nPNA calculated from urine collection and estimated dietary protein intake calculated with EDA. Similar correlation was made between 24-hour urine sodium and EDA dietary sodium intake. Results: The mean nPNA and EDA protein intake were 1.0 ± 0.3 and 0.9 ± 0.4 g/kg/day, respectively. The mean 24-hour urine sodium and EDA sodium HSP90 intake were 2595 ± 1304 and 1710 ± 1151 mg/day, respectively. There was significant correlation between nPNA and EDA protein

intake (R = 0.77, R2 = 0.60, P = 0.01). However, the correlation between 24-hour urine sodium and EDA sodium intake were not significant (R = 0.25, R2 = 0.06, P = 0.14). Conclusion: EDA could be used by VHVs as a tool for monitoring dietary protein intake among stage 3–4 CKD patients. NAKAMURA SATOKO1, KOKUBO YOSHIHIRO2, MAKINO HISASHI3, YOSHIHARA FUMIKI1, MIYAMOTO YOSHIHIRO2, KAWANO YUHEI1 1Division of Hypertension and Nephrology, National Cerebral and Cardiovascular Center; 2Department of Preventive Cardiology, National Cerebral and Cardiovascular Center; 3Division of Endocrinology and Metabolism, National Cerebral and Cardiovascular Center Introduction: The estimated glomerular filtration rate (eGFR) based on serum Cystatin C (CysC) and cretainine (Cr) are the clinical standard for the assessment of chronic kidney disease (CKD). The purpose of this study is to evaluate the difference between the diagnosis of CKD using Cr based eGFR (eGFRcr) and CysC based eGFR (eGFRcys).