Could panic attacks cause excess levels of catecholamines in urine tests?

Temporary, maybe: 24 hour urine tests for catecholamines are checking for epinephrine, norepinephrine, & other compounds that can be produced by catecholamine-secreting tumors called pheochromocytomas. Panic attacks alone might temporarily raise these levels, but not in sustained fashion like one of these tumors can. When present, pheochromocytomas can cause anxiety and panic attacks and raise urine catecholamines.