[Analysis with immunofluorescence of antibodies attached to bacteria in urinary sediment in the diagnosis of the site of urinary infections].
The authors assess the sensitivity and specificity of the antibody-coated bacteria assay for the localization of urinary tract infections. The results are compared with those obtained from cultures of urine samples taken from the upper tract either by ureteral catheterization or by direct puncture of the renal pelvis. In upper urinary tract infections the research of total immunoglobulins has proven positive in 71.4% of the cases; of the IgA class in 71.4%; of the IgG class in 57.1%; of the IgM class in 28.6% and of the secretory component of IgA in 60% of the patients. In case of lower urinary tract infections the research of total immunoglobulins was positive in 25% of the cases: that of the IgA class in 8.3%; of the IgG in 25%; of the IgM in 25% and of the secretory component of IgA in 22.2% of patients.