REN and primary adrenal insufficiency: Baseline biochemistry was highly suggestive of Addison’s disease: sodium 142 mEq/L, potassium 5.7 mEq/L, basal cortisol (8 a.m.)45.79 nmol/L (normal 140 to 690 nmol/L), ACTH 1250 pg/ml (normal <= 46.0 pg/mL), and serum renin 3.9 uIU/mL (normal 2.8 to 39.9 uIU/mL).