Purple Urine Bag Syndrome: Are We Aware?

Purple urine bag syndrome is a rare, striking medical phenomenon observed in patients having indwelling urinary catheters having urinary tract infection. It is commonly observed in elderly patients having constipation and long-standing indwelling urinary catheters and indicates bacterial urinary tract infection. The purple discoloration of the urinary bag is reported to be due to the presence of indigo and indirubin pigment produced by tryptophan metabolism by Gram-negative Bacteria. The authors present a case of 67-year-old female with purple discoloration of her urine bag due to urinary tract infection caused by Klebsiella pneumoniae.