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Alanine Amino Transferase (ALT) Blood Test

Original price £39.00 - Original price £39.00
Original price
£39.00 - £39.00
Current price £39.00

This blood test is commonly used to assess basic liver health (together with other biomarkers) and monitor liver function in various medical conditions.

  • Biomarkers: 1
  • Turnaround: 1-2 days

Simple and accurate blood test from a laboratory you can speak to.

Step 1. Choose sample collection option

Currently selected option: HOME KIT via Royal Mail Tracked 24

  • Available everywhere in mainland UK.
  • Includes everything you need to take a safe and suitable blood sample in about 15 minutes.
  • Post the sample back to our laboratory via Royal Mail Tracked 24.

Re-test guarantee

About the test

Our Alanine aminotransferase (ALT) blood test is a simple and effective way to monitor liver function. It is especially important for those who have been diagnosed with or are at risk of liver disease, who are on medication that may affect liver function, or who are concerned about the impact of their lifestyle on their liver health.

Catching the early signs of liver damage is crucial in preventing liver disease. Our CQC-regulated laboratory ensures rapid, accurate results for ALT and other liver function markers.

Order your ALT blood test home kit today and gain the early insight you need to make informed decisions about your liver health. With our convenient home testing kit, you can easily take the test at a time that suits you, receiving reliable next-day results. Our flexible subscription plans also allow for regular monitoring at discounted rates.

Gain the early insight you need to make informed decisions about your liver health with One Day Tests.

What is an Alanine AminoTransferase blood test?

An Alanine Aminotransferase (ALT) blood test measures the levels of an enzyme called ALT in the blood. ALT is primarily found in the liver, and its levels increase when the liver is damaged or inflamed. Therefore, an ALT blood test is often used as a marker of liver function and damage.

The test can help diagnose liver diseases such as hepatitis, cirrhosis, and fatty liver disease. ALT levels can also be elevated due to other factors such as alcohol consumption, obesity, and certain medications.

An ALT blood test is a simple and relatively inexpensive test that is recommended for individuals who have a history of liver disease or liver damage, those who consume alcohol excessively, and those who have risk factors for liver disease like obesity or diabetes.

1 Biomarker


    - Alanine AminoTransferase (ALT)


    Need more biomarkers? Check out our Liver Function Blood Test


    For most biomarkers our usual turnaround time is 24-48 hours, or less, from the time your sample is in our lab. We do not wait for all the results to complete before sending them to you, so you may start receiving results the same day for most cases, or as results become available.

    We are extremely proud of our very short turnaround times and a very efficient laboratory processes. Whilst we accommodate the shortest of time scales, with some results available within hours, for this particular test the usual turnaround time is:

    1-2 days

Doctor's notes

Hi, I am Dr. Adam Staten and here's my view on this test as a GP and Clinical Director at One Day Tests.

Alanine Aminotransferase (ALT) is an enzyme produced by the liver. It is used as a marker of liver function/damage and high levels of ALT may indicate that the liver has been damaged.

This marker should be interpreted together with another liver enzyme, the Aspartate Aminotransferase (AST) which will give a more complete overall picture of the enzymes.

Reference ranges

If your indicative ALT level is lower than the reference range for our laboratory:

Having a lower-than-normal ALT result is uncommon and usually is not a cause for concern. Occasionally it could indicate a vitamin B6 deficiency or kidney disease.

Please discuss this result with your GP.

If your indicative ALT level is higher than the reference range for our laboratory:

Extremely high concentrations of ALT are often due to hepatitis and viral infection. The levels will eventually return to normal, though sometimes it may take up to 3 months. 

High levels of ALT concentrations are present in chronic hepatitis and vary between normal and elevated levels, so it is worth performing this test regularly to monitor results over time.

Alcohol and diabetes may lead to a moderately high level of ALT, causing increased fat levels in the liver.

You will need to discuss the results that are outside of the reference range with your GP.

Red flag symptoms for the Alanine Amino Transferase (ALT) Blood Test

Even if the blood test is normal, you should still see your doctor if you have any of the symptoms below. 

  • Jaundice (yellowing of the skin and eyes)
  • Abdominal pain or swelling
  • Unexplained fatigue or weakness
  • Loss of appetite
  • Nausea and vomiting
  • Dark urine
  • Pale stool

Your Results and Health Dashboard

The results of your Alanine Amino Transferase (ALT) Blood Test will be emailed to you as a secured PDF file, ready for your GP and will also be uploaded to our Health Dashboard area of the website. It’s a unique and powerful tool, powered by our in-house clinical analysis research, to match your biomarkers across test panels and symptoms, as well as provide clinical commentary on all individual biomarkers you tested for.

The health dashboard will also provide "panel level" commentary - a birds eye view of the biomarkers that were tested. This feature allows you to view your test results and clinical commentary, and compare them to previous results, giving you a clear understanding of how your health is progressing.

By using the Health Dashboard, you can identify changes in your biomarkers and make necessary adjustments to your lifestyle. This added value is immense, as it empowers you to monitor your health and make informed decisions about your well-being.

It's free and is available with all of our tests.

Save on continuous monitoring with our subscription plan

The best way to look after your health is to do so regularly. This is easy to do with our continual monitoring plans which give you a discount on future blood tests. You choose the frequency and we'll do the rest.

When you purchase a subscription, we will deliver your home test kits or allow you to book appointments in line with your chosen frequency. You will be able to track your biomarkers over time in our powerful Health Dashboard, where results will be automatically updated for you. There is a minimum of 3 tests with any subscription, after which you can pause/restart/cancel at any time.

Special instructions

Hi, I am Stefania Brown, I am the Laboratory Manager at One Day Tests and here are the lab's special requests for the Alanine Amino Transferase (ALT) Blood Test.

Typically, an ALT blood test doesn't require any special preparations. However, it's common to order the test alongside other blood tests, which may require fasting. Each of our home test kits comes with instructions which explain what you need to do.

Venepuncture appointment - how to prepare

If you are coming into one of our clinics for the test, this is what you need to do before you arrive:

  • Drink plenty of water about an hour before the appointment.
  • Avoid coffee/tea/energy drinks. Water is good!
  • That’s it! We’ll do the rest.

Home test kit for Alanine Amino Transferase (ALT) Blood Test - how it works

Our blood test kits are simple and convenient.

The most important step in doing a blood test at home is to read the instructions very carefully. The process is very simple, but there are a few pitfalls you need to be aware of - you will save yourself a lot of time if you do it right the first time around!

  • Full printed instructions will arrive with your kit - please read them carefully.
  • Drink plenty before taking the sample and warm your hands up in the sink with warm water for a few minutes. This will make your blood flow much better.
  • Fill the tubes to the top line. We don’t need much blood; filling tubes to the top line is about 15 drops of blood.
  • Post the samples on the same day you take them, before midday, Monday to Thursday. If you post it any other time it might get to us late or be stuck at a sorting office over the weekend. You will then have to do it again.
  • Package the sample in the same box the kit came in. Otherwise, Royal Mail or DPD will reject it. The sample tubes go into a pouch, then into a cardboard box, and then into a return envelope. All of this is provided in the kit: please use it.

We look forward to receiving your sample in our lab!

How the finger prick home test kit for Alanine Amino Transferase (ALT) Blood Test works - from Dr. Adam Staten

Why choose us?

Hello! My name is Dr. Vinesh Mistry, I am part of the GP team here at One Day Tests and here is why you should trust us to test your blood.

We run our own regulated laboratories and our own accredited clinics. We manufacture our own approved home sample collection kits. Your results are looked after by our fantastic clinical governance team and our super-talented biomedical science team.

When you book your test with us - you book directly with the lab. This means accuracy and responsible duty of care, direct access to the provider and extremely fast turnaround times.

Finally, our customer services rock! You can ask the lab a question any time or you can speak to a real human. It's good to WhatsApp, email on or give us a call on 0845 527 07 67.

Frequently Asked Questions

Hi, I am Lana Nela, Lead Nurse, and here is what we are frequently asked about this test.

What are the causes of liver damage?

The liver can be damaged by various factors, including infectious illnesses such as hepatitis, genetic or autoimmune conditions, alcohol, toxins, and certain medications. Regular liver function tests are important when taking specific medications to monitor potential damage.

Fatty liver disease is a common cause of liver disease and occurs when excess fat accumulates in the liver due to unhealthy lifestyle choices.

Is liver damage permanent?

Liver disease can often be stopped and reversed in the early stages, as the liver has the ability to regenerate itself. However, the key to recovery is removing the cause of the damage, such as excessive alcohol consumption or calorie intake.

If left untreated, liver damage can progress to cirrhosis, which is irreversible and can eventually lead to death.

Why take this test?

Hi, I am Dr. Marco Esposito and here is why it's important to take this test.
  • This test is important to take because elevated ALT levels can indicate liver damage or disease, and catching these issues early can lead to better outcomes and treatment options
  • Taking an ALT blood test can also help identify potential risk factors for liver damage, such as heavy alcohol consumption, diabetes, or obesity
  • Regular monitoring of ALT levels can help individuals with known liver issues track their progress and make informed decisions about their health and well-being

Is this test right for you?

Hi, I am Sandeep Patel, I am the Laboratory Director at One Day Tests. Here are the symptoms that you may wish to address with this test.

The ALT blood test may be right for you if you have any of the following symptoms:

  • Jaundice (yellowing of the skin and eyes)
  • Abdominal pain and swelling
  • Chronic fatigue
  • Unexplained weight loss
  • Dark urine
  • Loss of appetite

It is important to consult with a healthcare provider to determine if an ALT blood test is appropriate for your individual situation.


    Abdominal discomfort, Abdominal pain, Abdominal swelling, Chronic fatigue, Dark urine, Liver pain, Pale stool, Vomiting, Yellow eyes, and Yellowing skin

Why blood tests are important.