Table 1.

Presenting serum and urine catecholamine levels.

Test	Patient result	Normal range
Plasma
(i) Total catecholamines	>8,705 pg/mL	123–1,125 pg/mL
(ii) Norepinephrine	>8,000 pg/mL	112–1,109 pg/mL
(iii) Dopamine	653 pg/mL	10–20 pg/mL
(iv) Epinephrine	52 pg/mL	50–95 pg/mL
Urine
(i) Total metanephrines	9,907 mcg	110–714 mcg
(ii) Normetanephrine	9,828 mcg	67–503 mcg
(iii) Homovanillic acid	66.1 mg	<6.8 mg
(iv) Metanephrine	79 mcg	<275 mcg