Abstract
Purple urine bag syndrome (PUBS) is an exceptional finding in the clinical setting and is featured by its distinctive purplish urine discolouration. It has been claimed to be due to many culprits, namely, long term indwelling catheterisation, dementia, and urinary tract infection with alkaline urine that is fully loaded with bacteria, bed or chair bound patients, female gender, constipation and chronic kidney disease (Sabanis et al, 2019). It is seen more in the geriatric words. It is said that it’s related to tryptophan aberrant metabolism by-products in red and blue pigments, due to bacterial colonization in urinary catheter. Its distinctive colour is due to indigo-producing (bluish) and indirubin- producing (reddish) pigments which react with the plastic tube, to yield the striking purplish colour (Van Keer et al, 2015, Kalsi et al, 2017).
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