Table 1.

Comparison of the diagnostic efficacy of CGA and urine fractionated metanephrines assays for the detection of pheochromocytoma in patients with a positive test for plasma fractionated metanephrines

Test	Sensitivity (%)	Specificity (%)
Positive plasma fractionated metanephrines and positive CGA (cutoff > 225 ng/ml)	32/37 (87)	52/71 (73)
Positive plasma fractionated metanephrines and positive CGA (cutoff > 270 ng/ml)	32/37 (87)	63/71 (89)
Positive plasma fractionated metanephrines and a positive urine metanephrine or normetanephrine fraction	31/34 (91)	20/25 (80)

Patients taking PPIs were excluded from the analysis.