Liver Function Tests: Difference between revisions
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<div class="editorbox"> '''Original Editor '''- [[User:Shwe Shwe U Marma|Shwe Shwe U Marma]] '''Top Contributors''' - {{Special:Contributors/{{FULLPAGENAME}}}}</div> | <div class="editorbox"> '''Original Editor '''- [[User:Shwe Shwe U Marma|Shwe Shwe U Marma]] '''Top Contributors''' - {{Special:Contributors/{{FULLPAGENAME}}}}</div> | ||
== Introduction == | == Introduction == | ||
Groups of blood tests performed to know the condition of a liver of a patient are known as liver function tests (LFT) or liver panel or hepatic function panel or hepatic panel.<ref>Teshome G, Ambachew S, Fasil A, Abebe M. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6803769/ Prevalence of liver function test abnormality and associated factors in type 2 diabetes mellitus: a comparative cross-sectional study]. Ejifcc. 2019 Oct;30(3):303.</ref> | Groups of [[Blood Tests|blood tests]] performed to know the condition of a liver of a patient are known as liver function tests (LFT) or liver panel or hepatic function panel or hepatic panel.<ref>Teshome G, Ambachew S, Fasil A, Abebe M. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6803769/ Prevalence of liver function test abnormality and associated factors in type 2 diabetes mellitus: a comparative cross-sectional study]. Ejifcc. 2019 Oct;30(3):303.</ref> | ||
[[File:Liver organ.png|alt=Image showing liver|center|thumb|337x337px]] | [[File:Liver organ.png|alt=Image showing liver|center|thumb|337x337px]] | ||
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|'''Causes of raised transaminases:''' | |'''Causes of raised transaminases:''' | ||
* Alcohol. | * [[Alcoholism|Alcohol]]. | ||
* Medications: non-steroidal anti-inflammatory drugs, antibiotics, HMG Co-A-reductase inhibitors, antiepileptic drugs, antituberculous drugs, herbal medications, illicit drug use. | * Medications: non-steroidal anti-inflammatory drugs, [[antibiotics]], HMG Co-A-reductase inhibitors, antiepileptic drugs, antituberculous drugs, herbal medications, illicit drug use. | ||
* Non-alcoholic steatohepatosis. | * Non-alcoholic steatohepatosis. | ||
* Chronic hepatitis B and C. | * Chronic [[Hepatitis A, B, C|hepatitis]] B and C. | ||
* Autoimmune diseases. | * [[Autoimmune Disorders|Autoimmune]] diseases. | ||
* Hemochromatosis. | * [[Hemochromatosis]]. | ||
* Wilson's disease. | * [[Wilson's Disease|Wilson's disease]]. | ||
* Congestive cardiac failure and ischaemic hepatitis. | * [[Introduction to Congestive Heart Failure|Congestive cardiac failure]] and ischaemic hepatitis. | ||
* ɑ<sub>1-</sub>Antitrypsin deficiency. | * ɑ<sub>1-</sub>Antitrypsin deficiency. | ||
* Coeliac disease. | * [[Celiac Disease (Coeliac Disease)|Coeliac disease]]. | ||
* Endocrine disease: hypothyroidism, Addison's disease. | * Endocrine disease: [[hypothyroidism]], [[Addison's Disease|Addison's]] disease. | ||
* Diseases of striate muscle. | * Diseases of striate muscle. | ||
* Glycogen storage diseases.<ref name=":1">Limdi JK, Hyde GM. [https://pmj.bmj.com/content/79/932/307.full Evaluation of abnormal liver function tests]. Postgraduate medical journal. 2003 Jun 1;79(932):307-12.</ref> | * Glycogen storage diseases.<ref name=":1">Limdi JK, Hyde GM. [https://pmj.bmj.com/content/79/932/307.full Evaluation of abnormal liver function tests]. Postgraduate medical journal. 2003 Jun 1;79(932):307-12.</ref> | ||
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|'''Causes of raised ALP:''' | |'''Causes of raised ALP:''' | ||
* Physiological | * Physiological | ||
** Women in the third trimester of pregnancy. | ** Women in the third trimester of [[Physiological changes during pregnancy|pregnancy]]. | ||
** Adolescents. | ** Adolescents. | ||
** Benign, familial (due to increased intestinal ALP). | ** Benign, familial (due to increased intestinal ALP). | ||
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** Drug induced cholestasis—for example, anabolic steroids. | ** Drug induced cholestasis—for example, anabolic steroids. | ||
** Adult bile ductopenia. | ** Adult bile ductopenia. | ||
** Metastatic liver disease. | ** Metastatic [[Liver Disease|liver disease]]. | ||
** Bone disease.<ref name=":1" /> | ** [[Bone]] disease.<ref name=":1" /> | ||
|} | |} | ||
{| class="wikitable" | {| class="wikitable" | ||
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* Hepatobiliary disease (often with other liver enzyme abnormalities). | * Hepatobiliary disease (often with other liver enzyme abnormalities). | ||
* Pancreatic disease. | * Pancreatic disease. | ||
* Alcoholism. | * [[Alcoholism]]. | ||
* Chronic obstructive pulmonary disease. | * [[COPD (Chronic Obstructive Pulmonary Disease)|Chronic obstructive pulmonary disease]]. | ||
* Renal failure. | * Renal failure. | ||
* Diabetes. | * [[Diabetes]]. | ||
* Myocardial infarction. | * [[Myocardial Infarction|Myocardial]] infarction. | ||
* Drugs—for example, carbamazepine, phenytoin, and barbiturates.<ref name=":1" /> | * Drugs—for example, carbamazepine, phenytoin, and barbiturates.<ref name=":1" /> | ||
|} | |} | ||
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* Unconjugated | * Unconjugated | ||
*# Increased bilirubin production. | *# Increased bilirubin production. | ||
*#* | *#* Hemolysis. | ||
*#* Ineffective erythropoiesis. | *#* Ineffective erythropoiesis. | ||
*#* Blood transfusion. | *#* Blood transfusion. | ||
*#* Resorption of | *#* Resorption of hematomas. | ||
*# Decreased hepatic uptake. | *# Decreased hepatic uptake. | ||
*#* Gilbert’s syndrome. | *#* [[Gilbert's Syndrome|Gilbert’s syndrome]]. | ||
*#* Drugs—for example, rifampicin. | *#* Drugs—for example, rifampicin. | ||
*# Decreased conjugation. | *# Decreased conjugation. |
Revision as of 12:40, 29 November 2020
Introduction[edit | edit source]
Groups of blood tests performed to know the condition of a liver of a patient are known as liver function tests (LFT) or liver panel or hepatic function panel or hepatic panel.[1]
Components of Liver Function Tests[edit | edit source]
Alanine Transaminase (ALT); Normal value: 0-45 IU/L
Aspartate Transaminase (AST); Normal value: 0-35 IU/L[2] |
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Causes of raised transaminases:
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Alkaline phosphatase (ALP); Normal value: 30–120 IU/l[2] |
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Causes of raised ALP:
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Gammaglutamyl transferase (GGT); Normal value: 0 to 30 IU/L[2] |
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Causes of raised GGT:
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Bilirubin; Normal value: 2 to 17 micromoles/L[2] |
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Causes of isolated hyperbilirubinemia:
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Prothrombin time; Normal value: 10.9 to 12.5 seconds[2] |
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Causes of prolonged prothrombin time:
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Albumin; Normal value: 40 to 60 g/L[2] |
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With progressive liver disease serum albumin levels fall, reflecting decreased synthesis. Albumin levels are dependant on a number of other factors such as the nutritional status, catabolism, hormonal factors, and urinary and gastrointestinal losses.[3] |
Resources[edit | edit source]
References[edit | edit source]
- ↑ Teshome G, Ambachew S, Fasil A, Abebe M. Prevalence of liver function test abnormality and associated factors in type 2 diabetes mellitus: a comparative cross-sectional study. Ejifcc. 2019 Oct;30(3):303.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Lala V, Goyal A, Bansal P, Minter D. Liver function tests. StatPearls. 2020 Apr 28.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Limdi JK, Hyde GM. Evaluation of abnormal liver function tests. Postgraduate medical journal. 2003 Jun 1;79(932):307-12.
- ↑ MedCram - Medical Lectures Explained CLEARLY. Liver Function Tests (LFTs) Explained Clearly by MedCram.com. Available from: https://www.youtube.com/watch?v=bFdTgty0T0I [Last accessed 29 November, 2020]