Anti HBeAg test is ordered for patients with chronic hepatitis B. Hepatitis B is a liver disease. Your doctor is likely to suggest this test to monitor disease progression in liver. This test is necessary to determine whether the infection is active or not, and at what stage the disease currently is. Additionally, this test is also done to monitor the response of patients to treatment. It is carried out on a blood sample and is often combined with other tests such as HBeAg. Its results are interpreted based on those obtained from other tests.