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Updated: May 14, 2026

Low-Cost, Volume-Controlled Dipstick Urinalysis for Home-Testing
Published on: May 8, 2021
Determination of underlying causes in asymptomatic, early-stage renal diseases by dipstick test
Mesut Okur1, Sukru Arslan, Ahmet Sami Guven
11Department of Pediatrics, School of Medicine, Duzce University, Duzce, 2Department of Pediatric Nephrology, 3Department of Pediat- rics; School of Medicine, Yuzuncu Yil University, Van; Turkey.
Insights
Screening healthy school children for hematuria and proteinuria can help prevent chronic kidney disease. Persistent findings warrant further investigation for underlying causes like renal stones or infections.
Area of Science:
- Pediatric Nephrology
- Urology
- Public Health Screening
Background:
- Early detection of kidney abnormalities in children is crucial for preventing chronic kidney disease.
- Urinary abnormalities like hematuria and proteinuria can be indicators of underlying renal pathology.
Purpose of the Study:
- To screen healthy school-aged children for hematuria and proteinuria using urine strips.
- To identify children with persistent urinary abnormalities for further evaluation.
- To determine the incidence of these conditions in a specific pediatric population.
Main Methods:
- A urine screening was conducted on 1848 healthy school-aged children (7-14 years) in eastern Turkey in 2008.
- Children with persistent hematuria and/or proteinuria were referred for specialist pediatric nephrology examination.
- Diagnostic workups were performed on referred cases to identify underlying etiologies.
Main Results:
- The incidence of isolated hematuria was 4.9%, isolated proteinuria 0.8%, and combined hematuria-proteinuria 0.5%.
- Persistence rates were 11.9% for isolated hematuria and 40% for combined hematuria-proteinuria.
- Identified causes included renal stones, hypercalciuria, urinary tract infections, vesicoureteral reflux, atrophic kidney, and IgA nephropathy.
Conclusions:
- Persistent hematuria in children necessitates investigation for conditions such as renal stones, hypercalciuria, and urinary tract infections.
- Urine strip screening is a valuable tool for identifying children at risk for kidney disease.
- Prompt referral and examination of persistent urinary abnormalities can lead to early diagnosis and management.
Aim:
To prevent possible chronic kidney diseases in healthy school- age children by screening for hematuria and proteinuria using a urine strip.
Methods:
The incidence of hematuria and proteinuria was determined in 1848 healthy school-age children aged 7 to 14 years by urine screening in the eastern region of Turkey in 2008. Cases with persistent hematuria and/or proteinuria were referred to a pediatric nephrologist, and further examinations were carried out.
Results:
Isolated hematuria, isolated proteinuria, and combined hematuria-proteinuria were found in 92 (4.9%), 16 (0.8%) and 10 (0.5%) patients, respectively. In addition, 11.9% (11/92) of cases of isolated hematuria and 40% (4/10) of cases of combined hematuria- proteinuria were observed to have persisted. Persistent hematuria and persistent hematuria-proteinuria were found in 11 (0.5%) and 4 (0.2%) patients, respectively. In these cases, underlying causes were found: renal stone disease, hypercalciuria, urinary tract infection, vesicoureteral reflux, atrophic kidney, and IgA nephropathy.
Conclusion:
According to this study, cases with persistent hematuria should be examined especially in terms of renal stones, hypercalciuria, and urinary tract infection.
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