Liver Function Tests Explained (ALT, AST, ALP, GGT, Albumin, Bilirubin, INR Made Simple)

Liver Function Tests (LFTs) are among the most commonly ordered blood tests in clinical medicine, helping healthcare professionals assess liver health, detect disease, and monitor treatment. In this video, we break down the key components of liver function testing in a clear and practical way for medical students, healthcare professionals, and anyone interested in understanding their lab results. You’ll learn what each test measures, why it’s important, and how abnormal results may relate to different liver conditions. The video explains the roles and clinical significance of major LFT markers including Alanine Aminotransferase (ALT), Aspartate Aminotransferase (AST), Alkaline Phosphatase (ALP), Gamma-Glutamyl Transferase (GGT), Bilirubin, and Prothrombin Time (PT/INR). We also discuss how clinicians interpret patterns of results to distinguish between hepatocellular injury, cholestatic disease, and impaired liver synthetic function. Whether you are studying for exams, reviewing clinical biochemistry, or trying to better understand your laboratory tests, this video provides a clear, structured overview of liver function testing and its clinical relevance. This video is intended for educational purposes only and should not replace professional medical advice or consultation with a qualified healthcare provider.