Understanding Liver Function Testing: Causes, Types, and When to Seek Medical Help

Understanding Liver Function Testing

Liver function tests (LFTs) are a group of blood tests used to monitor how well the liver is working. They measure levels of liver enzymes, proteins, and bilirubin to detect issues like liver damage, inflammation, or disease.

What Is Liver Function Testing?

Liver function testing typically involves drawing a blood sample to measure:

Alanine transaminase (ALT)

Aspartate transaminase (AST)

Alkaline phosphatase (ALP)

Gamma-glutamyl transferase (GGT)

Bilirubin

Albumin and total protein

These results help identify liver inflammation, bile duct issues, and metabolic disorders. Testing is often done as part of a health check, in response to symptoms, or to monitor ongoing conditions.

What to Expect from a Liver Function Testing Service

When attending a liver function test, you can expect:

A quick consultation or referral (if needed)

Blood sample taken, usually from your arm

Results typically returned within 24–72 hours

Follow-up advice or referral to a specialist if abnormal results are found

Option for home testing kits with remote analysis

Fasting may be required before testing, depending on what’s being measured.

Who Conducts This Service

Liver function testing is carried out by:

Phlebotomists (trained professionals who collect blood samples)

GPs and private doctors in health clinics

Nurses and laboratory staff at diagnostic centres

At-home testing providers, where you post your sample for analysis

Qualified professionals handle analysis and provide interpretation of your results.

Who Might Need This Service

Liver function tests may be recommended for:

Individuals with symptoms such as fatigue, jaundice, or abdominal pain

People with a history of alcohol use, hepatitis, or liver disease

Those taking medications that can affect the liver

Individuals undergoing regular health screenings or monitoring chronic conditions

People with obesity or metabolic syndrome

Testing helps catch problems early and monitor response to treatment.

Types of Liver Function Tests (If Applicable)

In addition to standard LFTs, additional related tests may include:

Hepatitis screening

Liver ultrasound or imaging

Fibrosis markers (for detecting liver scarring)

Iron and ferritin tests (for haemochromatosis)

Autoimmune liver panels

These may be recommended based on initial LFT results.

Risks Associated with Liver Function Testing

Liver function tests are very low risk. Minor risks include:

Temporary discomfort or bruising at the needle site

Dizziness or fainting during the blood draw (rare)

False positives or incidental findings requiring follow-up

Results should always be interpreted in context by a qualified professional.

How to Choose the Right Liver Function Testing Provider

When choosing a testing provider:

Ensure they are registered healthcare providers or diagnostic labs

Look for fast turnaround and accurate reporting

Check for qualified medical professionals who can interpret results

Consider whether you want in-clinic testing or a home kit

Use My Health Assistant to compare local providers with trusted reviews

Summary

Liver function tests are a key part of monitoring your liver health, whether you're experiencing symptoms or staying on top of a chronic condition. With My Health Assistant, you can easily find and book a liver function test near you—getting fast, reliable results and the expert guidance you need to make informed decisions about your health.