Tryptophan in the diet is metabolized by bacteria in the gastrointestinal tract to produce indole. Indole is absorbed into the blood by the intestine and passes to the liver. There, indole is converted to indoxyl sulfate, which is then excreted in the<unk> . In<unk> , bacteria that colonize the<unk> ry catheter convert indoxyl sulfate to the colored compounds indirubin and indigo.
Purple urine bag syndrome
Pyonephrosis
Pyelonephritis
Obstructive uropathy
Renal colic
Loin pain hematuria syndrome
Bladder stone
Glomerulonephrosis