RESUMEN
The fluorescent antibody coated bacteria test [ACB] depends upon the phenomena that the immunoglobulins coat the bacteria present only in the urine of patients with renal infection. The technique of detection of this coating by direct immunofluorescence has been utilized for detection of the site of urinary tract infection. Antibody coated bacteria test was positive in 46 out of 50 cases of pyelonephritis [92%] and in only 6 cases out of 50 cases of cystitis [12%]. IgG was detected in 100% of cases followed by IgA [46%] and IgM [38.5%]. The prevalence of IgG and IgA over the IgM in our study in comparison to the presence of high IgG and IgM in the serum supports the claim of local production of these immunoglobulins by the kidney. From this study we can conclude that antibody coated bacteria test is of good use, rapid, non invasive and reliable mean for localizing the site of urinary tract infection