Understanding Liver Function Tests (LFTs)

What Are Liver Function Tests (LFTs)?

Liver function tests, often called LFTs, are simple blood tests. They check how well your liver is working. These tests measure certain enzymes and proteins in your blood. Because your liver does many important jobs, LFTs help doctors see if it is healthy or damaged. For example, they can spot problems early, even before you feel sick.

Why Are LFTs Important?

First, your liver helps your body in many ways. It removes toxins, makes proteins, and stores energy. If your liver is not working well, you may not notice right away. However, LFTs can find early signs of trouble. This means you can get help sooner. Early detection of liver disease can prevent serious health problems later. According to the CDC, regular LFTs are key for people at risk of liver disease.

Common Conditions Detected by LFTs

LFTs can help find several liver problems, such as:

Hepatitis: This is swelling of the liver, often caused by a virus.

Cirrhosis: This means the liver has scars from long-term damage.

Fatty Liver Disease: This happens when fat builds up in the liver.

In addition, LFTs can show if medicines or alcohol are harming your liver. Sometimes, they also help find problems with your bile ducts or other organs.

Who Should Consider Regular LFTs?

Not everyone needs regular LFTs. Still, some people have a higher risk of liver disease. You should consider regular tests if you:

Have a family history of liver disease

Drink alcohol heavily or often

Are overweight or have diabetes

Take medicines that can affect the liver

Have been exposed to hepatitis viruses

Moreover, your doctor may suggest LFTs if you have symptoms like yellow skin, tiredness, or stomach pain.

How Are LFTs Performed?

The liver blood test procedure is quick and simple. Here is what you can expect:

A nurse or technician will clean your arm.

They will use a small needle to take a blood sample.

The sample goes to a lab for testing.

Usually, you do not need to do anything special before the test. However, your doctor may ask you to avoid food or certain medicines for a few hours. The whole process takes just a few minutes.

Understanding Your LFT Results

After the test, your doctor will review the results. LFTs measure things like:

ALT and AST (liver enzymes)

Bilirubin (a waste product)

Albumin (a protein made by the liver)

High or low levels can mean your liver is not working well. Still, many things can affect these numbers. For example, some medicines or even exercise can change your results. Therefore, always talk to your doctor about what your results mean for you.

Prevention and Lifestyle Tips for Liver Health

There are many ways to keep your liver healthy. For instance, you can:

Eat a balanced diet with fruits and vegetables

Limit alcohol use

Exercise regularly

Maintain a healthy weight

Avoid sharing needles or personal items

Get vaccinated for hepatitis if needed

Additionally, always follow your doctor’s advice about medicines and supplements.

When to Consult a Doctor

If you have risk factors or symptoms like yellow skin, dark urine, or pain in your upper right belly, see a doctor. Early detection of liver disease can make treatment easier. Even if you feel fine, regular liver function tests can help catch problems early. Remember, your doctor is the best person to guide you about your liver health.

Consult a healthcare professional for personalized advice on liver health and regular testing.