Antinuclear antibodies are present in systemic lupus erythematosus, Sjogren’s Syndrome, scleroderma, mixed connective tissue disease, drug induced lupus, and rheumatoid arthritis.
Elevated serum amylase is useful for diagnosing acute pancreatitis.
Bilirubin levels are useful in the diagnosis of metabolic, liver, hematologic, and hemolytic disorders.
Copper measurement is useful for the diagnosis of Wilson’s disease, primary biliary cirrhosis, and primary sclerosing cholangitis.