Table 6.

Adrenal vein sampling in case 3

Biochemical testing	Right adrenal vein	Inferior vena cava	Left adrenal vein	Comment
Epinephrine, ng/dL	2895	82	1342	Adrenal vein epinephrine concentrations of at least 100 pg/mL more than concentrations in the inferior vena cava were used to confirm successful adrenal vein cannulation.
Cortisol, mcg/dL	53	19	323	Adrenal vein sampling was completed following administration of dexamethasone of 0.5 mg every 6 h started 24 h prior.
Cortisol adrenal vein/ inferior vena cava ratio	2.8 (53/19)		17 (323/19)	Ratio > 6.5 confirmed autonomous cortisol secretion from the left adrenal gland.
				Ratio < 3.3 excludes autonomous cortisol secretion from the right adrenal gland.
Cortisol left adrenal vein/ right adrenal vein ratio			6.1 (17/2.8)	Lateralization of cortisol to the left was confirmed by the left to right adrenal vein ratio of >2.3.