Diagnosis of PA
The PA screening test was considered positive when the plasma aldosterone to renin ratio (ARR) was greater than or equal to 3.16 ng/dL per pg/mL (2.0 ng/dL per mIU/L) (to convert ng/dL of aldosterone to pmol/L, multiply by 27.74, and pg/mL of renin to pmol/L, multiply by 0.0237).