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To evaluate the presence of antibody-coated bacteria in the urinary sediment as a means of localizing the site of urinary-tract infection, the results of examinations for antibody-coated bacteria were correlated with a direct method for localizing the infection site, the bladder washout. In 25 patients, the findings by both technics agreed; in only one case was there disagreement. In three patients the bladder-washout technic gave uninterpretable results. Thus, the presence of antibody-coated bacteria correlates closely with upper-urinary-tract involvement — i.e., renal bacteriuria. The technic appears to be a sensitive, reliable, noninvasive means of differentiating infection of the upper from that of the lower urinary tract. (N Engl J Med 290:591–593, 1974)
Jones et al. (Thu,) studied this question.
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