The liver is one of the most important organs in the human body. It performs hundreds of vital functions including detoxification, metabolism of nutrients, production of proteins, and regulation of chemicals in the blood.
Because of these essential roles, doctors often request Liver Function Tests (LFTs) to assess how well the liver is working and to detect liver diseases early.
Conditions such as Hepatitis B, Hepatitis C, Fatty Liver Disease, and Cirrhosis can affect liver function long before symptoms appear. Laboratory testing helps detect these problems early so that treatment can begin promptly.
What Are Liver Function Tests?
Liver Function Tests are a group of blood tests used to evaluate the health of the liver by measuring specific enzymes, proteins, and substances produced or processed by the liver.
These tests help doctors determine whether the liver is:
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Functioning normally
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Inflamed or damaged
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Experiencing bile flow obstruction
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Affected by infection or metabolic disease
Common Components of a Liver Function Test
Several laboratory markers are used to assess liver health.
Alanine Aminotransferase (ALT)
Alanine Aminotransferase is an enzyme found mainly in liver cells. When liver cells are damaged, ALT leaks into the bloodstream.
Elevated ALT levels may indicate liver injury due to:
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Viral hepatitis
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Fatty liver disease
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Alcohol-related liver damage
Aspartate Aminotransferase (AST)
Aspartate Aminotransferase is another enzyme present in the liver, heart, and muscles. High AST levels may suggest liver damage, although it is less specific than ALT.
Doctors often interpret AST levels together with ALT levels to better understand liver injury.
Alkaline Phosphatase (ALP)
Alkaline Phosphatase is an enzyme associated with bile ducts. Elevated levels may indicate problems with bile flow such as bile duct obstruction or liver disease.
Bilirubin
Bilirubin is a yellow pigment produced during the breakdown of red blood cells. The liver processes bilirubin and helps eliminate it from the body.
High bilirubin levels can cause jaundice, a condition characterized by yellowing of the skin and eyes, and may occur in diseases like Hepatitis or Cirrhosis.
Albumin
Albumin is a protein produced by the liver that helps maintain fluid balance in the blood.
Low albumin levels may indicate chronic liver disease or reduced liver function.
When Do Doctors Recommend Liver Function Tests?
Doctors may request liver function tests if a patient experiences symptoms such as:
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Persistent fatigue
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Yellowing of the skin or eyes (jaundice)
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Abdominal pain
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Dark urine
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Nausea or loss of appetite
Liver function tests are also commonly performed to:
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Monitor patients with known liver disease
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Assess the effect of certain medications
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Screen individuals at risk of viral hepatitis
Why Routine Liver Testing Is Important
Many liver diseases develop silently without noticeable symptoms in their early stages. By the time symptoms appear, significant liver damage may already have occurred.
Routine liver testing helps to:
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Detect liver disease early
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Monitor treatment progress
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Prevent complications
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Support accurate medical diagnosis
Reliable Liver Function Testing in Nnewi
Accurate laboratory testing plays a crucial role in diagnosing and monitoring liver diseases.
At Onamec Medical Laboratory in Nnewi, we provide reliable liver function testing using standard diagnostic procedures to ensure accurate results that help doctors make informed treatment decisions.
Protect Your Liver Health
Your liver works tirelessly to keep your body functioning properly. Regular health checkups and laboratory tests can help detect liver problems before they become serious.
If your doctor recommends a liver function test, it is an important step toward protecting your long-term health.