Fig. 5
From: Tryptophan metabolites and gut microbiota play an important role in pediatric migraine diagnosis
ROC analysis of the diagnostic value of tryptophan metabolite biomarkers. Receiver operating characteristic curve (ROC) of serotonin (5-HT), kynurenic acid (KYNA), quinolinic acid (QUIN) and the ratio of kynurenic acid to kynurenine (KYNA/KYN), quinolinic acid to kynurenine (QUIN/KYN), and kynurenic acid to quinolinic acid (KYNA/QUIN) for diagnosing pediatric migraine (A-F)