Complete blood count Basal glycemia and 2 hr post-load 75 g glucose Insulinaemia Glycated hemoglobin Serum ferritin Thyroid stimulating hormone and sometimes free thyroxine Sodium and serum potassium Uric acid Lipid profile Creatinine Basal serum cortisol and/or post-Adrenocorticotropic hormone 24-hr urinary free cortisol Post-dexamethasone cortisol: in those with high cortisol with not recognized cause Microalbuminuria Others depending on the case, such as: 24-hr urine catecholamines (Epinephrine, Norepinephrine and Metanephrines), gliadin antibodies, vanillylmandelic acid, parathyroid hormone, vitamin B12, folic acid, ANAs, testosterone, creatinine clearance, antibodies against human hemoglobin in stool, hypersensitive reactive C protein, 24-hrs urinary sodium, brain natriuretic peptide, etc.