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 |