Liver Function Tests (LFT): When Should You Get One Done?

Your liver is one of the most vital organs in the body. It filters toxins, produces proteins, stores nutrients, and aids in digestion. But often, liver problems develop silently without showing clear symptoms until they become severe. This is why Liver Function Tests (LFTs) play a crucial role in detecting liver health issues early.

In this blog, we’ll explore what an LFT is, why it’s important, common symptoms of liver problems, and when you should get an LFT done.

What is a Liver Function Test (LFT)?

A Liver Function Test (LFT) is a blood test that measures the levels of enzymes, proteins, and bilirubin in the blood. These markers help evaluate how well your liver is functioning and detect possible liver damage, inflammation, or disease.

Key Parameters Measured in LFT:

• ALT (Alanine Aminotransferase) – Detects liver injury
  
  

• AST (Aspartate Aminotransferase) – Indicates liver and muscle damage
  
  

• Alkaline Phosphatase (ALP) – Linked to bile duct and bone health
  
  

• Bilirubin – Measures liver’s ability to process waste
  
  

• Albumin & Total Protein – Checks protein production
  
  

• Gamma GT (GGT) – Evaluates bile duct and alcohol-related damage
  
  

Why is an LFT Important?

An LFT helps:

• Detect liver diseases such as hepatitis, fatty liver, and cirrhosis
  
  

• Monitor alcohol-related liver damage
  
  

• Check side effects of medicines that may harm the liver
  
  

• Diagnose causes of jaundice, fatigue, or abdominal pain
  
  

• Track progress of ongoing liver treatments
  
  

Symptoms That Indicate You May Need an LFT

While many liver conditions remain silent, watch out for these warning signs:

• Persistent fatigue and weakness
  
  

• Yellowing of eyes and skin (jaundice)
  
  

• Abdominal pain or swelling
  
  

• Loss of appetite or unexplained weight loss
  
  

• Dark urine or pale stool
  
  

• Itchy skin
  
  

• Frequent nausea or vomiting
  
  

If you notice any of these, consult a doctor and get your Liver Function Test done at the earliest.

Who Should Get a Liver Function Test Done?

You should consider an LFT if you:

• Have a family history of liver disease
  
  

• Consume alcohol regularly
  
  

• Are overweight or obese (risk of fatty liver disease)
  
  

• Have diabetes or high cholesterol
  
  

• Take medications that can affect the liver
  
  

• Have been diagnosed with hepatitis (B or C)
  
  

• Experience symptoms of liver dysfunction
  
  

How is the Test Performed?

An LFT is a simple blood test. A small sample of blood is taken from your arm and analyzed in the lab. The results help your doctor understand the condition of your liver and guide treatment if needed.

Why Early Testing Matters

The liver has the ability to repair itself, but only if problems are detected early. Delayed diagnosis can lead to severe conditions like:

• Liver cirrhosis
  
  

• Chronic hepatitis
  
  

• Liver failure
  
  

• Liver cancer
  
  

Getting an LFT at the right time can prevent complications and ensure better treatment outcomes.

Final Thoughts

A Liver Function Test (LFT) is a simple yet powerful tool to safeguard your liver health. If you have risk factors or symptoms, don’t delay—consult your doctor and get tested.

Regular monitoring, a balanced diet, exercise, and limiting alcohol intake can go a long way in keeping your liver healthy.