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Liver function tests
LFT
Liver function tests are common tests that are used to see how well the liver is working. Tests include:
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Albumin
Albumin
Albumin is a protein made by the liver. A serum albumin test measures the amount of this protein in the clear liquid portion of the blood. Albumin c...
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Alpha-1 antitrypsin
Alpha-1 antitrypsin
Alpha-1 antitrypsin is a laboratory test to measure the amount of alpha-1 antitrypsin (A1AT) in your blood.
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Alkaline phosphatase (
ALP
)
ALP
Alkaline phosphatase (ALP) is a protein found in all body tissues. Tissues with higher amounts of ALP include the liver, bile ducts, and bone. A blo...
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Alanine aminotransferase (
ALT
)
ALT
The alanine transaminase (ALT) blood test measures the level of the enzyme ALT in the blood.
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Aspartate aminotransferase (
AST
)
AST
The aspartate aminotransferase (AST) blood test measures the level of the enzyme AST in the blood.
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Gamma-glutamyl transpeptidase (GGT)
Gamma-glutamyl transpeptidase (GGT)
The gamma-glutamyl transpeptidase (GGT) blood test measures the level of the enzyme GGT in the blood.
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5' nucleotidase
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Prothrombin time
, also expressed as international normalized ratio (INR)
Prothrombin time
Prothrombin time (PT) is a blood test that measures the time it takes for the liquid portion (plasma) of your blood to clot. A related blood test is ...
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Serum bilirubin
Serum bilirubin
The bilirubin blood test measures the level of bilirubin in the blood. Bilirubin is a yellowish pigment found in bile, a fluid made by the liver. Bi...
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Urine bilirubin
Urine bilirubin
Bilirubin is a yellowish pigment found in bile, a fluid produced by the liver. This article is about a lab test to measure the amount of bilirubin in...
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References
Pincus MR, Abraham NZ. Interpreting laboratory results. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods . 23rd ed. Philadelphia, PA: Elsevier; 2017:chap 8.
Pincus MR, Tierno PM, Gleeson E, Bowne WB, Bluth MH. Evaluation of liver function. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods . 23rd ed. Philadelphia, PA: Elsevier; 2017:chap 21.
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Liver function tests - illustration
Tests that monitor liver function are usually performed by withdrawing a sample of blood.
Liver function tests
illustration
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Cirrhosis
(In-Depth)
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Alcoholism
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Review Date: 8/22/2016
Reviewed By: Laura J. Martin, MD, MPH, ABIM Board Certified in Internal Medicine and Hospice and Palliative Medicine, Atlanta, GA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.
