label: Elevated urinary quinolinic acid level
label_lc: elevated urinary quinolinic acid level
description: "The amount of quinolinic acid in the urine, normalized for urine concentration, is above the upper limit of normal. Quinolinic acids is a pyridinedicarboxylic acid that is pyridine substituted by carboxy groups at positions 2 and 3. It is a metabolite of tryptophan."