Skip to main content

Table 6 Commonly used formulas in adrenal vein sampling

From: Adrenal vein sampling: technique and protocol, a systematic review

Description Formula Use
Selectivity Index (SI) “adrenal vein” cortisol/peripheral vein cortisol Ascertain if sampling was adequate
Lateralization Index (LI) (dominant adrenal vein aldosterone÷cortisol)/ (non-dominant adrenal vein aldosterone÷ cortisol) Determine if production is unilateral or bilateral
Contralateral Suppression Index (CSI) (Non-dominant adrenal vein aldosterone ÷ cortisol)/ (peripheral aldosterone÷peripheral cortisol) Adjunct value to determine if production is unilateral or bilateral