Table 1.

Screening laboratory tests of secondary causes of hypercholesterolemia and hypertriglyceridemia

Causes	Hypercholesterolemia	Hypertriglyceridemia	Tests
Hypothyroidism	O	O	Thyroid stimulating hormone, free T4
Diabetes mellitus		O	Fasting plasma glucose, glycated hemoglobin
Cushing syndrome		O	24 h urine free cortisol, late night salivary cortisol, 1 mg overnight dexamethasone suppression test
Liver disease	O	O	Transaminases, bilirubin, alkaline phosphatase, etc
Renal disease	O	O	Serum creatinine, urine/serum albumin, etc