Hypothyroidism can be one cause of elevated liver function, but there can be others. A liver function test, which is a blood test, may be one of many tests used for diagnosing this condition, notes Healthline. Hypothyroidism occurs when the thyroid gland does not manufacture sufficient amounts of thyroid hormone.
Although the liver function test may show elevated values of certain liver enzymes, other tests, including thyroid and pituitary function tests, are necessary to make a proper diagnosis of hypothyroidism because there are many other conditions that also cause high liver function. The liver enzymes that are usually high in this test are alanine transaminase and aspartate transaminase, according to Mayo Clinic.
Other medical conditions that can also lead to a high liver enzyme levels include different types of hepatitis, non-alcoholic fatty liver disease, mononucleosis, Wilson's disease and pancreatitis, notes Mayo Clinic.