Abnormal “liver function tests” (LFTs) are often found as part of a GP routine health screen or can be found while investigating symptoms. Common causes for abnormal LFTs are above the recommended intake of alcohol and a fatty liver related to the “metabolic syndrome”. It is important to identify the possibility of viral hepatitis (hepatitis B virus and hepatitis C virus) as there are effective and low risk therapies to reduce the risk of long term liver damage. Prescribed medication and supplements are also associated with abnormal LFTs. Less common causes of abnormal LFTs include autoimmune disease and haemochromatosis. GP referral to a specialist is required if there are persistently abnormal LFTs and when the diagnosis is not clear after initial investigation and management.
