LIVER FUNCTION TESTS
(LFTs)
PREPARED BY MR. ABHIJIT DAS
Liver function tests (LFTs) are blood tests that assess liver health. They help diagnose and monitor liver diseases like hepatitis and cirrhosis. Here are the common LFTs:
1.
ALT (Alanine aminotransferase):
Found mainly in the liver. Elevated levels indicate liver damage. Normal range:
7-56 U/L for men, 5-44 U/L for women.
2.
AST (Aspartate aminotransferase):
Another liver enzyme. Elevated levels can signal liver damage or heart/muscle
issues. Normal range: 8-48 U/L for men, 7-35 U/L for women.
3.
ALP (Alkaline phosphatase):
Found in many tissues including the gall bladder. High levels can indicate bile
duct blockage. Normal range: 45-115 U/L for adults.
4.
Bilirubin:
Waste product from red blood cell breakdown. High levels suggest liver or
bilirubin-processing issues. Normal range: 0.1-1.2 mg/dL.
5.
Albumin:
Liver-produced protein. Low levels can indicate liver damage. Normal range:
3.5-5.5 g/dL.
6.
PT (Prothrombin time):
Measures blood clotting time. An abnormal PT suggests liver disease.
Regular LFTs help maintain liver health and catch
issues early.