Table 1.

Results of biochemical testing.

	Result	Reference range
Plasma metanephrines	0.87 nmol/L	0.00–0.49 nmol/L
Plasma normetanephrines	2.22 nmol/L	0.00–0.89 nmol/L
24-hour urine metanephrines	483 µg/d	36–229 µg/d
24-hour urine normetanephrines	495 µg/d	114–865 µg/d