Purple urine bag syndrome (PUBS) is a unique and intriguing visual alarm in patients associated with a long-term indwelling catheter. The manifested color was formed from the metabolism of tryptophan in the gastrointestinal tract yielding the end product of indigo and indirubin, forming a purple hue. This investigation reported PUBS in an elderly woman with an indwelling catheter and fecal incontinence due to spinal cord injury which, to our knowledge, was the first case in our secondary regential hospital, Bangli Medika Canti Hospital. The patient underwent urinary catheter replacement and received intravenous ceftriaxone and oral ciprofloxacin, following which the urine turned clear yellow, and the patient was discharged. We present a case and literature review of this peculiar phenomenon.
Key words: purple urine bag syndrome, PUBS, urinary tract infection, indigo, tryptophan