A Liver Function Test (LFT) is a group of blood tests used to assess liver health and identify changes that may affect normal liver function. It commonly measures parameters such as bilirubin, ALT, AST, alkaline phosphatase, albumin, and total protein. These results can help doctors evaluate liver inflammation, bile flow, and the liver’s ability to perform important functions.
An LFT blood test may be recommended when a person has symptoms such as jaundice, persistent fatigue, abdominal discomfort, dark urine, loss of appetite, or unexplained nausea. It may also be advised for people with known liver conditions or those taking medicines that can affect the liver.
What Does an LFT Check?
A liver function test provides information about different aspects of liver health. Depending on the test panel, it may help assess liver cell injury, bilirubin processing, bile duct function, and protein production. Your healthcare provider interprets the results together with your symptoms, medical history, and other investigations.
LFT Test Preparation and Results
Preparation requirements can vary depending on the specific tests included. Your healthcare provider or diagnostic centre may advise whether fasting is required and whether any medicines need special consideration. LFT results should always be interpreted by a qualified healthcare professional, as an abnormal value does not by itself confirm a particular disease.