Related Experiment Video
Updated: Jun 26, 2026

Cell-Free DNA Integrity Analysis in Urine Samples
Published on: January 5, 2017
Elevated transrenal DNA (cell-free urine DNA) in patients with urinary tract infection compared to healthy controls
Vanessa García Moreira1, Belén Prieto García, Tamara de la Cera Martínez
1Servicio de Bioquímica Clínica, Hospital Universitario Central de Asturias, Spain.
Objective:
To study whether levels of transrenal DNA (Tr-DNA) are influenced by the presence of urinary tract infections (UTI).
Methods:
Tr-DNA concentrations were measured in 124 donors and 55 patients with UTI. Two methods for DNA extraction were compared.
Results:
UTI patients showed higher concentrations than the donors (normal range: 0-147 GE/mL). QIAamp MiniElute Virus Spin Kit was more efficient than QIAamp DNA Blood Mini Kit.
Conclusion:
Increased concentrations of Tr-DNA urine DNA are shown in presence of UTI.
Related Concept Videos
Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care
Urine Studies I: Urinalysis
Urinary Tract Infection I: Introduction
Microbiota of the Urogenital Tract
Urine Studies II: Urine Culture and Sensitivity Test
Acute Pyelonephritis II: Diagnostic Studies and Management

