Introduction: As other attempts for prevention of disease by vaccination or early diagnosis of asymptomatic diseases (by screening examination of children in several ages), search for early diagnosis of renal diseases that are treatable or preventable is continuing. Our review of other researches showed several different and paradoxical results about it's cost benefit; some researchers advise employing it seriously while some others reject using it. Because our country is very different from developed countries in several parameters, we attempted to determine value of one time urinalysis (as screening) by dipstick and microscopy in asymptomatic children.
Materials and Methods: This study is a descriptive-cross-sectional study. Sampling was randomized cluster, all 6831 cases (52.36% boys and 47.64% girls) selected from primary school children in Kermanshah City.
Urine was examined for four parameters, blood , protein, pus, and glucose. Asymptomatic children with abnormal results re-examed.
Result: All abnormal findings in first and second urinalysis were (1.06% and 0.56%) for boys (8.17% and 3.38%) for girls and (4.45% and 1.9%) for total subjects. The final results for four parameters are as follows:
1) For Hematuria these numbers were (0.39% and 0.25%) (0.8% and 0.25%) and
(0.59% and 0.25%).
2) For Proteinuria they were (0.36% and 0.17%) (1.66% and 0.49%) (0.98% and 0.32%)
3) For Glucosuria they were (0.08% and 0.06%) ( 0.18% and 0.06%) (0.13% and 0.06%) and finally, for Pyuria they were (0.28% and 0.14%) (6.39% and 2.89%) (3.19% and 1.45%).
Conclusion: The results of this study was comparable with those of Kaplan’s. These results in all parameters, in comparison with that of Kaplan’s (except for Glucosuria and proteinuria) had more frequency. In this study the effect of sex on pyuria and proteinuria was statistically significant. Therefore we recommend to obtain single screening urinalysis (by Dipstick and Microscopy) at early school age.