Blood sample collection options

You can choose your preferred collection method when you checkout

Finger prick kit (FREE)

You can do this test at home without the need for a doctor. We'll send you everything you need to collect your sample and post it back to us. And it's all included in the cost. We've put together a video that covers the process, making it easy to check and track your health from home.

Home nurse appointment (+£45) was £60

We'll arrange for a medical professional to visit your home and collect your sample. This is great if you're unsure on how it all works or have trouble collecting a sample. No need to book a doctor's appointment or visit a clinic, we'll send you everything you need to collect a sample and post it back to our labs.

Visit a partner clinic (+£45)

Once you've ordered your test, look out for an email from our phlebotomy partners containing information and a link to book your appointment. We'll send you everything the clinic will need to complete the sample and post it back to our labs.

Organise a nurse myself (FREE)

If none of the above options work for you, you can arrange your own medical professional to collect your sample. There is no additional charge for this. Once you've ordered your test, we'll send you everything you and your chosen medical professional will need to collect a sample and post it back to our labs.

Still unsure how it works? You can find more information on collection methods and the service we provide in our 'How it Works' section.

What gets tested?

10 Biomarkers

Additional biomarkers can be added by personalising this test.

What are biomarkers?

Biomarkers are specific compounds we can detect in your blood sample that reflect different things about your health. Your test will tell you your levels for each of the above biomarkers, and whether they are in a normal range.

About flexible subscriptions

How does a subscription work?

When you purchase this test subscription plan, we will automatically send you another test kit in a few months. Don't worry - you have full control over when this will be, and you can change/cancel it anytime.

When you first purchase this test, you can choose your subscription options in the checkout. We do this, because we recommend taking multiple tests over time to track how your biomarkers change. You'll be charged per test kit (rather than monthly, for example).

Why subscribe to multiple tests?

One test will show you what areas you need to focus on, continued testing will help you learn how your training, diet and lifestyle is impacting your health.

How often should I test?

We recommend a follow up test 3 months after your first test, followed by a test every 6 months depending on your results, but its up to you!

Can I change what's tested in future tests?

Yes, you can tailor/customise subsequent tests (via your app) to focus on just the areas that need improving.

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Forth home blood test kit with yellow tube
Liver blood test - Go beyond reporting basic blood results
Hand holding a lancet up to a finger on the other hand
Liver blood test - Personalised targets
Liver blood test - Focus where it counts
Liver blood test - Guidance for optimal health
Analysed by
NHS Lab
Tracked 24
delivery
Personalised
GP advice
Finger prick or venous collection

Liver Function Blood Test

Trustpilot 4 stars

Results in 2 working days

10 Biomarkers

Our at-home liver function blood test helps you check the health of your liver and kidneys. It checks important biomarkers like liver proteins, GGT and ALP for your liver, and creatinine and urea for your kidneys. Checking your liver function at home is a quick and easy way to avoid liver disease and live a healthier life.

Analysed by
NHS Lab
Tracked 24
delivery
Finger prick or venous collection

£49

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What gets tested?

10 Biomarkers

Blood sample collection options

WHEN TO TAKE THE TEST?

If you have consumed a large amount of alcohol, we recommend leaving a gap of 72-96 hours before taking this test.

1 Million+

results delivered

As seen in

As seen in
Liver health scores for men and women, UK 2025

Keeping Your Liver Healthy

Your liver detoxifies your body, processes nutrients, and supports digestion. However, factors like diet, alcohol, medications, and underlying health conditions can impact your liver function, often without obvious symptoms.

Our liver function blood test offers a convenient way to check key markers like ALT, AST, and GGT, which help assess liver health. Early detection of issues allows you to make lifestyle changes or seek medical advice before more serious problems develop.

We analysed data from thousands of blood test results and found that only 14.4% of women and 4.7% of men had ‘Excellent’ Liver Protein scores. This shows how important it is to test and monitor your liver function. When you test with Forth, you get personalised insights and goals to help you improve and maintain your liver health.

What this Liver Function Blood Test measures

10 Biomarkers

Alanine Aminotransferase (ALT)

Alanine aminotransferase (ALT) is an enzyme primarily found in the liver. Only small amounts are usually found in the blood. However, if the liver or muscles are damaged an increased level of ALT will be released into the bloodstream. Elevated ALT levels can be caused by alcohol, fatty liver, viruses, or intense exercise.

Alkaline Phosphatase (ALP)

Alkaline phosphatase (ALP) is an enzyme found in high concentrations in the bones and liver. It is measured in liver function tests to assess liver health. Elevated ALP levels can indicate liver diseases such as hepatitis, cirrhosis, or bile duct obstruction​.

Albumin

Albumin is a protein produced by the liver, crucial for maintaining blood volume and pressure. Low albumin levels can indicate liver dysfunction, as the liver's ability to synthesize this protein is compromised. Monitoring albumin helps assess liver health, diagnosing conditions like cirrhosis, hepatitis, and other liver diseases​.

Gamma GT (GGT)

Gamma-glutamyl transferase (GGT) is an enzyme found mainly in the liver. The concentration of GGT within the bloodstream increases when there is either damage to the liver or bile ducts, or when there is increased production of GGT within the liver. This can occur due to taking many medications, smoking, poorly controlled diabetes and excessive alcohol consumption.

Globulin

Globulins are proteins produced by the liver and immune system and is a general term to describe more than 60 proteins. Measuring globulin in liver health tests is important in the assessment of liver function. Abnormal globulin levels can indicate liver dysfunction or chronic liver diseases like cirrhosis or hepatitis.

Total Protein

Total protein test measures the quantity of protein present within your bloodstream and is a combination of both albumin and globulin levels. Measuring total protein in liver function tests assesses the liver's ability to synthesize proteins, indicating liver health, nutritional status, and helping to identify liver diseases like cirrhosis and hepatitis.

Creatinine

Creatinine is a waste product which is produced by muscles when they break down creatine. It is excreted from the body by our kidneys in urine. Therefore, the levels of creatinine can give a good indication of how effectively the kidneys are working. Elevated levels suggest potential kidney stress or increased muscle metabolism.

eGFR

Estimated glomerular filtration rate (eGFR) measures how well the kidneys filter waste from the blood. It helps detect kidney disease early and can provide an overall assessment of kidney function. The calculation is based on levels of creatinine and results can be influenced by a number of factors including muscle mass, weight and hydration.

Urea

Both urea and creatinine are good indicators of whether the kidneys are working properly. Urea is a waste product formed in the liver when protein is metabolised. It is released into the bloodstream and carried to the kidneys where it is expelled within urine. If the kidneys are not performing correctly the level of urea will rise.

Uric Acid

Uric acid or urate is a natural waste product produced when the body breaks down purines. Most uric acid is removed from the body by the kidneys. Too much uric acid can lead to the formation of solid crystals in the joints - known as gout. High levels can also lead to the formation of kidney stones.

How our Liver Function Blood Test works

Getting the insights you need to improve your health has never been easier.

How it works - collect your sample

Collect your blood sample

Collect a small blood sample at home or at one of our clinics

How it works - view your results

Get fast, accurate results

Get results within 2 working days of your sample reaching our lab

How it works - make improvements

Improve your liver health

View your personalised report in the app and learn how to improve your liver function

Only 14.4% of women and 4.7% of men have liver protein scores in the ‘Excellent’ range

Get personalised insights and goals to improve your liver health with HealthCoach

Unlock your health scores

Liver Health Score - 75/100

Translates biomarker results into health score for liver health.

Personalised health targets

ALT

HEALTHY
Green target bar

8 (IU/L)

Next target 10 - 14 (IU/L)

Get incremental, achievable targets based on your unique results, ensuring progress at every step

Focus where it counts

25

100

Liver proteins

NEEDS ATTENTION

50

100

ALP

SOMEWHAT LOW

HealthCoach's smart algorithms identify the specific areas which will make the biggest impact on your journey to better health

Guidance for optimal health

25

100

Liver proteins

NEEDS ATTENTION
Dr Thom Phillips

There are a number of causes of low albumin including both medical and lifestyle factors. The most common cause is linked to nutrition, particularly a lack of protein in the diet. Other causes include liver and kidney function changes, smoking, reduced muscle mass and low physical activity and exercise.

Get tailored advice which considers your gender, age, hormone treatments and menstrual cycle to help you reach optimal health

Liver Function Blood Test, recommended by our doctors

"Your liver is the body's major processing centre. A liver function test measures various enzymes, proteins, and substances in your blood that are involved in a number of metabolic pathways. The results show if your liver is functioning properly, helping assess the impact of diet, alcohol, exercise and some medications."

Dr Thom Phillips

Dr Thom Phillips

Clinical lead

Frequently asked questions

This is what our customers ask us about the most. For more information, try our help centre.

Where is your liver?

Your liver sits in the upper right side of your abdomen, just below your ribcage. It’s the largest internal organ and is crucial for processing everything you eat, drink, and absorb into your bloodstream.

What does the liver do?

Your liver contributes to over 500 bodily functions, from breaking down toxins, metabolising nutrients, storing energy, supporting digestion, and regulating blood sugar levels. It also plays a key role in fighting infections and maintaining overall health.

How to check your liver function at home

This liver function blood test is the perfect way to proactively check and track your liver health from home. We offer several at-home options for you to choose from:

  • Fingerprick kit: Our fingerprick kits are a quick and simple way of testing your liver function at home. Simply collect a small sample of blood from your fingertip and post it to our labs for analysis. Everything you need is included in the kit.
  • Home nurse appointment: Arrange for a nurse to visit you at your home to collect a blood sample from a vein in your arm. We’ll post you a kit, but only a trained phlebotomist can collect your sample.

We also offer the option to have your bloods taken at one of our partner clinics. Find a clinic near you here.

Interpreting liver function test results

Your liver function test measures key enzymes and proteins, such as ALT, ALP, and GGT, to assess liver health. Elevated levels may indicate liver stress, inflammation, or disease. Low protein levels can also suggest potential liver function issues.

With HealthCoach, you’ll get a detailed but easy-to-understand look at each biomarker, as well as over scores to help you understand exactly what’s going on and what you need to do.

What happens when your liver enzymes are high?

High liver enzyme levels can indicate that your liver is under stress or damaged. This may be due to factors like alcohol, fatty liver disease, infections, medications, or underlying conditions.

What are the first signs of a bad liver?

Early signs of liver problems can be subtle but symptoms may include fatigue, unexplained weight changes, yellowing of the skin or eyes (jaundice), dark urine, bloating, nausea, or loss of appetite. Regular blood testing can help detect issues before symptoms become serious.

What causes liver disease?

Liver disease can result from excessive alcohol consumption, obesity, viral infections like hepatitis, certain medications, or genetic conditions. Poor diet and lifestyle choices can also contribute to liver stress over time. Identifying risks early can help prevent long-term damage.

Does this test check for liver cancer?

This test does not directly diagnose liver cancer, but it can detect abnormal liver function, which may indicate underlying issues.

If you’re concerned about liver cancer, our TruCheck™ Early Cancer Screening Blood Test would be the best place to start. It identifies circulating tumour cells (CTCs) which can help detect early stage liver cancer.

Why does this test check my kidney function too?

Your liver and kidneys work closely together to filter waste and toxins from your body. Poor liver function can put extra strain on the kidneys. By assessing both, this test provides a more complete picture of your overall health.

How soon will the test arrive?

If you order your test before midday on a Monday to Friday then your kit will be dispatched the same day.

All our kits are sent out via Royal Mail Tracked24, so it should be with you within 1-2 working days.

How secure is my data?

We have strict processes in place to ensure the protection of your data. Following GDPR the company also operates under tight legal rules about the sharing of data which ensures that data is only shared if it is crucial to the delivery of our service. For example, our doctors see customer results at the time of review, however, after review, access to results is withdrawn.

Learn more about your data security.

Can I have someone take my blood for me?

Yes. We offer two options if you do not want to do our finger prick test. The first is a home appointment where a nurse comes to your home to take a blood sample. The second is to visit a Phlebotomy clinic near you that offers a blood sample service.

A blood sample will be taken from your vein and we will provide you with everything you need to give to the nurse to allow them to take the sample.

The nurse will give you the blood sample to return to us using the pre-paid envelope provided.

Does a doctor review my results?

We have a team of doctors and nurses who look at all results and will comment on any results that are outside of the normal range for your age.

Can I download the results to share with my GP?

Yes, you can download your results from your health dashboard as a PDF to share with your GP.

Learn how to export your results.

We are dedicated to supporting you on improving your health

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What customers say about our Liver Function Blood Test

Liver Function Blood Test