Q. What are the normal ranges for key markers in liver function tests (LFT), such as ALT, AST, and bilirubin?
Doctor Answer is medically reviewed by SecondMedic medical review team.
Sure, understanding the normal ranges for key markers in liver function tests (LFT) like ALT, AST, and bilirubin is essential for interpreting test results accurately.
ALT (Alanine Aminotransferase) and AST (Aspartate Aminotransferase) are enzymes found in liver cells. The normal range for ALT in adults is typically 7-56 units per liter (U/L), while AST is usually 8-48 U/L. Higher levels may indicate liver damage or disease, such as hepatitis or fatty liver.
Bilirubin is a waste product from the breakdown of old red blood cells. The normal total bilirubin level in adults is usually 0.1-1.2 milligrams per deciliter (mg/dL). Elevated levels of bilirubin can be caused by liver conditions like jaundice or gallstones.
Keep in mind that normal ranges can vary slightly depending on the laboratory and specific testing methods used. Always consult your healthcare provider to interpret your individual results accurately.
Understanding these normal ranges helps healthcare providers identify potential liver issues and determine appropriate next steps for diagnosis and treatment. If you have concerns about your liver function tests or notice any abnormal symptoms, seek medical advice promptly for further evaluation and management tailored to your specific needs.
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