正常上限値の5倍未満であれば3~6ヶ月ごとに経過観察
Lawrence S Friedman, MD. “Approach to the patient with abnormal liver biochemical and function tests”. UpToDate. https://www.uptodate.com/contents/approach-to-the-patient-with-abnormal-liver-biochemical-and-function-tests, (参照 2022-06-17).