they also found that depressed patients with high hpa activity tend to have lower csf levels of 5-hydroxyindoleacetic acid , a serotonin metabolite , and modestly lower levels of 3-methoxy-4-hydroxyphenylglycol , a metabolite of epinephrine and norepinephrine , than patients with normal hpa activity .
C0014563
epinephrine
C0028351
norepinephrine