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  • Packaging of the Amino Acid Test from Cerascreen
  • Contents of the Amino Acid Testkit from Cerascreen: Packaging, instructions, lancets, plaster, dry blood card, disinfection wipe, return envelope
  • Preview of the test result of the Amino Acid Test from Cerascreen
Amino Acid Test
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Amino Acid Test

Free shipping as of £90,00
Delivery in 2 - 5 days
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420,000+ satisfied customers

About the test

With the cerascreen® Amino Acid Test you can determine the concentration of 26 essential, semi-essential and non-essential amino acids in your blood. This information can help you optimising your amino acid supply through nutrition and dietary supplements.

Amino acids are the building blocks of proteins in all living beings. Some of them – the essential amino acids – have to be ingested by people. Amino acids are required for almost everything that happens in the body: from the formation of hormones and enzymes to energy metabolism and immune defence to muscle, skin and hair growth.

Amino Acid Test

  • Analysis of the most relevant amino acids
  • Take your blood sample at home – easily and discreetly
  • Professional analysis in one of our medical partner laboratories
  • Personalised recommendations for your optimal protein intake
  • Receive your result within 4 to 6 working days after sample’s arrival in the laboratory

Here we present all the essential amino acids:

Isoleucine icon


Isoleucine is used among other things to build protein and produce energy in muscle cells.

Leucine Icon


Leucine belongs to the BCAAs, the branched-chain amino acids. It is needed among other things to provide energy for the muscles.

Lysine Icon


Lysine is important for building bones and muscles. In addition, the amino acid is involved in the formation of collagen, which keeps the skin elastic.

Methionine Icon


Methionine supplies the body with sulfur and is converted into the semi-essential amino acid cysteine in the liver.

Phenylalanine Icon


The body needs phenylalanine and the tyrosine formed from it among other things to produce adrenaline, thyroid hormones and the pigment pigment melanin.

Threonine Icon


Threonine is part of many proteins that play a role in the teeth, connective tissue of the skin, metabolism, the nervous system and among other things.

Tryptophan Icon


Tryptophan is a building block of serotonin, which is converted into the sleep hormone melatonin. Tryptophan-rich foods to help you fall asleep.

Valine Icon


Valine belongs to the BCAA. The amino acid is important for blood sugar as well as for nerve, muscle tissue and among other things.

Histidine Icon


The body can produce histidine itself, but not in sufficient quantities. It affects inflammation, the immune system, metabolism and among other things.


Benefits of the Amino Acid Test

The right composition of amino acids is an important part of a healthy, balanced diet. This does not work for everyone in everyday life. Some people naturally require a greater intake of amino acids or they consume too few amino acids. That is why it is worth checking your levels.

For the cerascreen® Amino Acid Blood Test, you do not have to go to a doctor’s surgery or clinic and do not have to wait for appointments. You will receive detailed and illustrated instructions and can easily and discreetly take the sample safely at home. Our medical diagnostic laboratories then analyse your blood for the concentration of 26 amino acids in your blood.

Take advantage of our expertise: cerascreen® is market leader for at-home medical sample-taking and send-in kits in Europe, with eight years of experience in the development and analysis of tests. We have developed more than 50 different approved sample-taking and send-in kits (medical products), analysed 250,000 samples and serve 19 different European countries.

Results Amino Acid Test

Result of the Amino Acid Test

As soon as your sample has been analysed, you will receive your results report via the My cerascreen® app or your user account on our website. You can easily view the report on your smartphone, tablet or computer and read it in printed form.

Through the laboratory analysis, you will find out about the concentration of 26 different amino acids in your blood. Learn from concrete recommendations for action how you can achieve an optimal amino acid intake through nutrition and protein powder. The extensive health information in the report reveals important details on amino acids and what role they play in the body.


Frequently asked questions about Amino Acid Test

Why test for amino acids?

The proteins you eat are consisting of various amino acids. Some of these amino acids your body needs to maintain important functions. If certain amino acids are lacking, deficiency symptoms can occur. The physical and mental performance then often drops to a limited extent – for example, muscle weakness and cramps, tiredness and exhaustion as well as susceptibility to infections.

The amount of essential amino acids that you need to ingest through food depends on your diet. Above all, your requirements are influenced by intensive sports.

In addition, with a lack of micronutrients, such as vitamins and minerals, as well as with certain diseases – for example, liver diseases – there may also be a deficiency in semi-essential and non-essential amino acids.

Who should take the Amino Acid Blood Test?

We recommend the Amino Acid Test to anyone who wants to get to know and optimise their own nutrient levels better.

People who eat vegetarian or vegan should pay particular attention to their amino acid intake. Because food of animal origin generally has the highest protein quality and thus the best composition of the amino acids. In studies, people who were vegan sometimes had less of certain amino acids in their blood.

Amino acid levels is also an important topic for athletes. Both competitive athletes and committed amateur athletes put their muscles to the test. This can go hand in hand with a greater need for essential amino acids. In addition, certain amino acids, such as the BCAA, may help optimise athletic performance.

The body also needs more amino acids during pregnancy and breastfeeding as well as after muscle injuries.

Older people have lower calorie needs, but still require amino acids and therefore often consume an inadequate amount of amino acids.

How does the Amino Acid Blood Test work?

With one of the lancets included in the Amino Acid Test kit, take three drops of blood and collect them on the dried blood spot card. Send the dried blood spot card together with your blood sample on it by mail to our partner laboratory free of charge using the prepaid return envelope.

In the diagnostic laboratory your blood sample will be tested for the concentration of 26 essential, semi-essential and non-essential amino acids in your blood.

What will the test results tell me?

The results report of the amino acid test informs you about the concentration of a total of 26 amino acids in your blood sample. These are measured in nanomoles per millilitre (nmol/ml). The following amino acids are measured:

Essential amino acids: isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine

Semi-essential amino acids: arginine, asparagine, glutamine, glycine, proline, tyrosine, histidine

Non-essential amino acids: alanine, aspartic acid, beta-alanine, citrulline, gamma-aminobutyric acid (GABA), glutamic acid, homoarginine, ornithine, serine, taurine

In addition to the measured amino acids, you will learn about standard ranges based on studies by our medical partner laboratory. This way, you can find out where you are compared with your supply of the respective amino acid.

What kind of recommendations will I get?

The result report shows you how you can feed your body with the different kinds of essential amino acids in case your current intake is too low. In general, certain foods as well as food combinations can be considered to cover your body’s needs. You will learn what biological valency’ means and how you can use this concept to assess the protein quality of food.

If there is a pronounced deficiency of a certain amino acid, we explain when protein powder, nutritional supplements as well as nutritional advice or medical consultation would be a useful step to take.

What is the function of amino acids?

Amino acids are chemical compounds that link together to form long chains, thereby forming proteins, among other things. The 21 different proteinogenic amino acids are the building blocks of proteins and of many important substances in the human body – for example, certain hormones.

The body cannot produce essential amino acids by itself; you have to ingest them through food.

The body can form semi-essential amino acids, but it needs other building blocks that you have to supply to it. Nitrogen is often required, but in some cases it needs essential amino acids. For example, the essential amino acid methionine is used to produce the semi-essential amino acid cysteine. In addition, the body consumes large amounts of the semi-essential amino acids under chronic stress and infections and then requires an external supply.

Non-essential amino acids are amino acids that your body can produce by itself. For this process, it is important that the body is sufficiently supplied with micronutrients (e.g. vitamin B and magnesium).

What is the purpose of amino acids in the body?

The different amino acids have different important tasks in the body. Some of them are involved in the structure and function of muscles, energy metabolism and immune defence. For example, according to some studies, leucine is said to contribute to muscle building and the ability to regenerate.

Amino acids are also needed to produce hormones, enzymes, messenger substances and other substances. The essential amino acid tryptophan, for example, is used in the formation of the happiness hormone serotonin. The messenger substance histamine, which is essential for the immune system, is produced from the semi-essential amino acid histidine.

What are BCAA?

The abbreviation BCAA stands for branched-chain amino acids. It is a subspecies of the essential amino acids with a special chemical structure, which mainly includes isoleucine, leucine and valine.

The BCAA are popular in nutritional supplements and protein powders. They are said to have a positive effect on the energy supply to the muscles and help to build up and maintain muscles. Whether BCAA can actually actively support muscle building is controversial in science. So far, studies have produced contradictory results – even if there have been some studies in which the use of BCAA had a positive effect on muscle growth, regeneration and body weight.

Which foods contain amino acids?

Chicken eggs are considered the best food for amino acid supply. The biological value that describes the quality of a protein source is geared towards the chicken egg: the egg has 100 per cent biological value. In general, foods of animal origin have a higher amino acid composition than plant-based ones.

However, we now know that there are combinations of foods that provide you with amino acids that are even better than eggs. At 136 per cent, a dish with potatoes and egg has the highest value.

But some vegan meals also have excellent protein quality, especially when combining legumes and cereals. For example, the following combinations are recommended:

  • Lentil soup or hummus with wholegrain bread
  • Oatmeal with soy milk
  • Rice with beans

Can too many amino acids be harmful?

Not only can a lack of amino acids be harmful, too many amino acids can also have a negative impact on health. This does not usually occur with a normal diet. However, side effects are possible if you consume a very one-sided protein-rich diet or an excessive dosage of nutritional supplements.

That is why it makes sense to check your levels with our Amino Acid Test before taking supplements.

For example, too much methionine can lead to the excretion of too much calcium, which can weaken the bones and contribute to osteoporosis. Too high a dose of phenylalanine supplements, in some cases, raised blood pressure and could be problematic for people with high blood pressure.

Why are children under 18 not allowed to take the test?

Our tests are not suitable for underage children and adolescents under the age of 18. Under 18s cannot activate the tests online and therefore cannot receive a test result. We ask that you do not administer the tests to your children either.

Children and adolescents need much closer supervision and counselling regarding medical tests and their interpretation. Testing with lancets and chemicals is not without risk and would need to be closely supervised by guardians. In addition, the reference values we give are always based on adult data. In the case of children, the risk of misinterpreting the results would be very high.

We want to fulfil our responsibility as a provider of medical products and ensure that children and adolescents are not unsettled by measurement results that are difficult for them to interpret. Since we cannot control whether the minors' legal guardians actually consent to the test being carried out and supervise them, we exclude tests for under 18s altogether.

If you are under 18 and have purchased a test, please contact our customer support.

Why does it take up to a week for the sample to reach the lab?


Please bear in mind that your results will not be analyzed in the UK but in Germany. For that reason, it can take up to a week for the sample to arrive at the lab. This does not affect the stability of the samples, as the method we are using is optimized for long transports.

Initially, your sample is sent to our collection center in the UK. From there, it is shipped to our central sample sorting facility in Germany, which then distributes samples to our partner laboratories. Once your sample is analyzed there, you will receive a notification and can access your result online.

Please check your mailbox regularly. We will notify you as soon as your sample is sent, arrives, or is analyzed.

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This is how it works

1. Test at home

Your test kit contains everything you need to draw a small sample of blood from your fingertip. Then send the sample back to us free of charge in the enclosed return envelope.

2. View results online

After the evaluation in the medical specialist laboratory, you will have online access to your personal result report.

3. Act

Your access to the test results and the evidence-based findings and tips to improve your health: the my cerascreen® user profile on our website or our app.

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