A creatine phosphokinase (CPK) level should be measured before starting statin treatment in the following situations: − Renal impairment − Hypothyroidism − Personal or familial history of hereditary muscular disorders − Previous history of muscular toxicity with a statin or fibrate − Previous history of liver disease and/ or where substantial quantities of alcohol are consumed − In elderly (age > 70 years), the necessity of such measurement should be considered, according to the presence of other predisposing factors for rhabdomyolysis