Value of urine sediment phenotyping in renal allograft recipients

Leukocytes excreted in urine of renal transplant recipients were phenotyped and the results were correlated with their post-transplant course. The majority of excreted cells were monocytes, a phenomenon that bore no relationship to clinical status of the patients. T-lymphocyturia was associated with both acute rejection and urinary tract infection. In contrast, B cells were excreted in low numbers.