Table 3.

Selective adrenal venous sampling

Sample	Aldosterone nmol/dl	Cortisol mmol/dl	Adrenal:IVC cortisol ratio	Cortisol corrected aldosterone ratio
Lt. AV	28,346	10,825	19.2	2.61
Rt. AV	3070	8658	15.3	0.3
IVC	644	564

• To confirm successful catheterization; the adrenal vein cortisol-to-inferior vena cava cortisol ratio’s cut off is greater than a ratio of 5:1. In this case, the ratio is 19 and 15 for left and right adrenal vein, respectively.

• A cut-off for the cortisol corrected aldosterone ratio from high side to low side of more than 4:1 is indicative of the lateralization. In this case, the ratio is 8.7:1

AV adrenal vein, IVC inferior vena cava, Lt. left, Rt. right