• Dirk Moßhammer and Matthias Christian Reichert.
• Hausarztpraxis Oferdingen, Lindberghstraße 3, 72768 Reutlingen.
• Dtsch. Med. Wochenschr. 2024 Oct 1; 149 (21): 128212861282-1286.

Background And Aims Elevated liver enzymes (ELE) are common in Germany. Primary care physicians are paramount in the early detection of liver diseases. The aim of this article is to provide an overview of autoimmune liver disease for primary care physicians (PCP) with a focus on laboratory diagnostics.Methods The national and international guidelines and review articles serve as a reference, supplemented by the current prevalence data from the German Zentralinstitut of the kassenärztliche Vereinigung (ZI).Results In 2022, of the approximately 59 million PCP patients aged 20 years and older, around 50-60/100 000 received a confirmed diagnosis of autoimmune hepatitis or primary biliary cholangitis (according to ICD-10-GM diagnosis). The diagnoses were made 2 to 6 times more frequently in women than in men. Primary sclerosing cholangitis occurred in around 10/100 000 people treated by PCPs; women were affected up to twice as often, especially from the age of 60. Data on etiology, clinical, laboratory and diagnostic parameters, treatment options and prognosis data for the 3 disease entities are presented concisely in this article.Conclusion Laboratory diagnostics is the central step in the diagnosis of autoimmune liver diseases. However, general laboratory screening for ELE is not advisable. Rather, it is important to recognize, that no validated key figures are yet available for these markers in the primary care setting. The interpretation of these laboratory values is therefore complex. It is therefore advisable to consider determining these specific laboratory parameters, taking into account the common (and less common) causes that can lead to ELE.Thieme. All rights reserved.

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