No, this is a gut‑metabolic balance test. Traditional microbiome (stool) tests look at which bacteria live in your gut. Our Gut Health Test instead measures what trey do, through signals in your blood that reflect how your gut interacts with your metabolism. By combining these signals, the test provides an overview of your current gut‑metabolic profile. No stool sample is required — just a drop of blood from a simple finger prick — offering convenient, non‑invasive insights related to your diet and lifestyle.

Traditional stool tests show which microbes are present in your gut, but presence alone does not reveal their activity. The Gut Health Test instead measures specific signals in your blood, including metabolites produced by gut bacteria and how your body processes tryptophan, an essential amino acid from food. Beyond digestion, the gut contributes to how nutrients are processed and how certain compounds are formed. Tracking these signals helps you understand more about your gut‑metabolic profile, offering convenient insights into how your gut and metabolism interact. Unlike stool tests, this method requires only a simple finger‑prick blood sample.

Stool tests can show which microbes are present in your gut, and that information is useful for research. But presence alone doesn’t reveal whether those microbes are active, what they are producing, or how your body is responding to them. Our Gut Health Test goes a step further by measuring specific metabolites in your blood. This gives an indirect picture of microbial activity (through indolepropionic acid, produced by certain gut bacteria) and tryptophan metabolism (through the KYN/TRP ratio). These markers are scientifically associated in research with gut microbial diversity, dietary fiber intake and aspects of immune system function, providing complementary insights that stool tests cannot capture on their own.

Your test results are presented as five clear, science‑based markers, offering insights into how your gut microbes and your body interact. Each marker highlights different ways your gut bacteria process metabolites and how these signals reflect whether your metabolism is leaning toward balance or toward immune‑related activity. Your test results are analyzed in strict confidentiality by Vitas AS, an independent chemical analysis laboratory, before being translated into a personalized test report. The information in your report is based on a single drop of blood, measuring three metabolites (IPA, KYN, TRP) and their ratios (IPA/KYN, IPA/TRP, KYN/TRP). These insights are intended to help you better understand your gut‑metabolic profile and how it relates to your current diet and lifestyle. You can use them as a guide when considering a personalized diet and supplement routine to support your overall wellness, alongside professional advice where needed.

All samples are analyzed by Vitas AS, an independent chemical analysis laboratory and a world leader in dried blood spot testing. The analytical method is based on established technology, and a formal validation study has confirmed its accuracy and reliability.

You take the test in the comfort of your home. No messy stool collection, just a drop of blood from a simple finger prick. It only takes a few minutes, and your results are ready at zinzinotest.com in no more than three weeks. The metabolites measured vary depending on dietary intake throughout the day. To optimize your results, you should take this test on an empty stomach in the morning after a water-only overnight fast of at least 10 hours.

The state of our gut health is dynamic. Any changes in our lifestyle, diet or daily routines affect how we respond to food and our nutritional uptake. This test measures your tryptophan metabolism and gut microbiome, both of which are influenced by what you eat and how you live. That's why we always recommend you purchase two tests. The results from the first one give you a baseline measure of your current status. To remind you when it’s time to check your progress, you’ll receive your second test separately after four months. This is a perfect interval to track your body’s response to any dietary or lifestyle changes, and take the opportunity to make adjustments if your gut health hasn’t improved.

For the Gut Health Test, there is not enough scientific data to support child values, thus we mainly recommend the test to adults. The same metabolites are measured in both children and adults so there is no harm in testing a child, but the target values are based on scientific data mainly from adults. Children’s metabolism and gut microbiota are still developing, which means their levels may not be directly comparable to adult values. The test can still provide useful insights for children, but results should be interpreted with this in mind. Over time, as more data become available, specific reference values for different age groups may be established.

Your Gut Health Index gives you a snapshot of how your gut, immune and metabolic systems work together to support your body. This index is dynamic, and changes with your diet and lifestyle, and the overall physiological state of your body. By supporting your microbiome with prebiotics, fiber, and restorative nutrients, balancing fats, and managing stress, you create conditions that help your index move in a positive direction over time, which can help you improve your Gut Health Index.

These markers are influenced by many factors, including diet, lifestyle, genetics, and the overall physiological state of your body – so we cannot guarantee that your results will improve. What we can say is that certain choices are strongly linked to positive changes: increasing fiber intake (ZinoBiotic+), balancing fatty acids (BalanceOil+), and filling nutritional gaps with essential vitamins, minerals, and beta-glucans (Xtend/Xtend+). These supplements are designed to support, not replace, a healthy diet and lifestyle. 

For the best chance of improvement, we recommend focusing on a diverse, whole-food diet (whole grains, vegetables, leafy greens, legumes), including fermented foods (such as kimchi, sauerkraut, yoghurt with live cultures), polyphenol-rich plant foods and extra virgin olive oil, along with regular physical activity, stress management, quality sleep, and caring for your general health. Zinzino supplements are designed to support, not replace, these healthy choices, helping you cover nutritional gaps and reinforce what your body needs to thrive.

Yes. The test is based on established scientific evidence into tryptophan metabolism and its links with gut and metabolic health. The markers measured (IPA, KYN, TRP, and their ratios) are widely studied in peer-reviewed science as indicators of microbial activity, and immune-linked metabolism.

All analyses are performed by Vitas AS, an independent chemical analysis laboratory and world leader in dried blood spot (DBS) testing. The analytical method is validated, and the findings are supported by a growing body of international research into the role of these metabolites in gut health, immune regulation, and systemic balance.

Metabolic health is key to overall health. It refers to how efficiently your body turns food into energy and maintains balance across key functions like blood sugar regulation, fat metabolism, and energy use. When these processes work smoothly, they support steady energy, good recovery, and overall resilience. When they are out of balance, it can place extra strain on your body and affect how you feel every day. A high-fiber diet is the way in. A diverse and balanced gut with a mix of bacteria maintains a metabolic balance by keeping the good bacteria strong enough to digest the nutrients in food and turn food into energy more easily.​ When the systems are off, you might feel tired, gain weight easily, struggle with focus, or even put yourself at risk for chronic diseases.

Gut microbiome diversity refers to the variety of different microbes living in your gut. A diverse microbiome is generally considered a sign of gut health, because different microbes carry out different functions.​ You need a variety of prebiotic fibers to ensure that you feed the beneficial bacteria in your gut. When we eat food rich in fiber from plants like fruits, vegetables, beans, nuts and whole grains, our gut bacteria break down fiber, and produce metabolites that can benefit gut, metabolic, and immune balance.

It describes what your gut bacteria are doing, how active they are, how they break down food, and what they are making as a result. If your gut is a factory, the microbial activity is what the workers (the bacteria) are doing on the job, whether they’re running smoothly, or causing trouble when things are out of balance.​ The Gut Health Test doesn’t measure everything your microbes do directly. Instead, it looks at key metabolites in your blood that reflect both microbial activity and your body’s responses. This gives you an indirect but meaningful picture of how diet, lifestyle, and your gut microbes are working together.