Abstract
Purple urine bag syndrome is reported to occur in aged bedridden patients, especially women who have indicanuria and persistent urinary tract infection. We report two patients, a male and a female, who were aged bedridden and had persistent urinary tract infection. However, indican in the urine was only slightly positive in one and negative in the other. Although it is considered that some species of bacteria and indican in urine participate in the occurrence of this syndrome, a conclusion could not be obtained in this study since the sample was very small.