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Underestimating chronic kidney disease by urine dipstick without serum creatinine as a screening tool in the general Japanese population

Abstract

Background

It is not known if urine dipstick alone can identify chronic kidney disease (CKD) in the general Japanese population.

Methods

We designed a cross-sectional study using data obtained in 2008 from a nationwide community-based health examination program for adults aged 40–74. The data consisted of blood tests, urine tests and questionnaire related to metabolic disorders. Those who had both serum creatinine measured and urine dipstick tested were analyzed.

Results

Data were obtained from 538,846 people with a mean age of 62.8 years, consisting of 41.6 % males. Our study showed that 14.4 % had an eGFR below 60 mL/min/1.73 m2, 5.2 % had proteinuria and 18.1 % had CKD. Within the population with CKD, non-proteinuric CKD accounted for 71.4 %. The proportion of non-proteinuric CKD was highest in stage G3a (91.8 %) followed by G3b (77.0 %) disease, and was greater in the more elderly and in females. The proportion of non-proteinuric CKD was 47.9 % in diabetes mellitus, 69.3 % in dyslipidemia, 66.8 % in hypertension and 57.1 % in metabolic syndrome. Furthermore, non-proteinuric CKD accounted for 78.1 % of the population without these lifestyle diseases, suggesting that even in the population without apparent risk, CKD is still prevalent and can be missed when urine dipstick is the only screening method used.

Conclusions

This study showed that a considerable population of CKD might be overlooked when only dipstick proteinuria is assessed for CKD screening. Hence, we strongly recommend that both urinalysis and serum creatinine measurement should be a part of the nationwide CKD screening system.

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Acknowledgments

This study was supported by a Health and Labor Sciences Research Grant for “Design of the specific health check for chronic kidney disease (CKD) based on individual risk assessment at Specific Health Checks” from the Ministry of Health, Labor and Welfare of Japan.

Conflict of interest

All authors declare that they have no competing interests.

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Corresponding author

Correspondence to Daisuke Uchida.

Additional information

T. Watanabe, K. Asahi, K. Iseki, C. Iseki, K. Tsuruya, K. Yamagata, T. Moriyama, I. Narita, S. Fujimoto, T. Konta, M. Kondo, M. Kasahara and K. Kimura are the members of Steering Committee for Design of the Comprehensive Health Care System for Chronic Kidney Disease (CKD) Based On Individual Risk Assessments at Specific Health Check.

D. Uchida and H. Kawarazaki have contributed equally to this manuscript.

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Uchida, D., Kawarazaki, H., Shibagaki, Y. et al. Underestimating chronic kidney disease by urine dipstick without serum creatinine as a screening tool in the general Japanese population. Clin Exp Nephrol 19, 474–480 (2015). https://doi.org/10.1007/s10157-014-1019-5

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  • DOI: https://doi.org/10.1007/s10157-014-1019-5

Keywords

  • Chronic kidney disease
  • Screening
  • Urine dipstick test