Review Article
Purple Urine Bag Syndrome: A Rare Spot Diagnosis
Table 2
Risk factors for purple urine bag syndrome [
4].
| Risk factor | Mechanism |
| Female gender | Anatomy predisposed to UTIs | Increased dietary tryptophan | Increased substrate for conversion | Increased urine alkalinity | Facilitates indoxyl oxidation | Severe constipation | Increased time and substrate for bacteria | Chronic catheterisation | Increased UTI risk | High urinary bacterial load | Bacterial sulphatase/phosphatase availability | Renal failure | Impaired indoxyl sulphate clearance |
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