Purple urine bag syndrome: A case report and review of literature

S. Yaqub, S. Mohkum, K. N. Mukhtar

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


Purple urine bag syndrome (PUBS) is an infrequent condition, seen mostly in elderly female patients, characterized by an intense purple discoloration of contents of urine bag following long-term indwelling urinary catheterization. The purple discoloration is most often due to the presence of indigo and indirubin pigments which are metabolites of tryptophan. Urinary bacteria with indoxyl sulphatase activity metabolize indoxyl sulphate to produce indigo and indirubin, particularly in alkaline urine. We report an elderly woman with a urinary tract infection and constipation who presented with PUBS. The purple urine disappeared after antibiotic therapy and change of the urine bag. To the best of our knowledge, this is the first case of PUBS reported from this region.

Original languageEnglish
Pages (from-to)140-142
Number of pages3
JournalIndian Journal of Nephrology
Issue number2
Publication statusPublished - Mar 2013


  • Purple urine bag syndrome
  • Tryptophan
  • Urinary catheters


Dive into the research topics of 'Purple urine bag syndrome: A case report and review of literature'. Together they form a unique fingerprint.

Cite this