The Organic Acids Test (OAT) is a simple urine test that provides a detailed look at how well your body is functioning on a cellular level. It measures organic acids, which are substances your body produces as it breaks down food, fights infections, and manages energy. By looking at these markers, the OAT can give insight into things like:

• How well your digestion is working
• If you might have an overgrowth of yeast (like Candida) or harmful bacteria
• How your body is managing energy and detoxification
• Levels of certain vitamins and nutrients
• How your brain chemicals (neurotransmitters) are functioning

The OAT is particularly helpful because it can show imbalances that may not show up on standard blood tests, helping to identify hidden root causes of health issues.

Common symptoms that may suggest the OAT could be useful:

• Chronic fatigue or low energy
• Brain fog, difficulty concentrating, or poor memory
• Mood issues like anxiety, depression, or irritability
• Bloating, gas, or ongoing digestive problems
• Skin issues such as acne, eczema, or rashes
• Frequent infections or feeling run-down
• Sugar cravings or difficulty managing blood sugar
• Poor sleep
• Headaches or migraines

If you’re experiencing a mix of these symptoms and haven’t found clear answers, the OAT can be a powerful tool to uncover underlying imbalances and guide a more targeted approach to improving your health.

Re Welle offers the test with interpretation for £340. You can also add a package or single consultation to address your symptoms and test results (price start from £100).

The DUTCH Test (which stands for Dried Urine Test for Comprehensive Hormones) is a simple, at-home urine test that gives a detailed picture of your hormone health. It measures your key sex hormones—like estrogen, progesterone, and testosterone—as well as stress hormones such as cortisol and DHEA, along with how your body is processing and clearing them. This helps build a full understanding of your hormonal balance and how it’s affecting your overall well-being.

Unlike standard blood tests, the DUTCH test tracks your hormone patterns throughout the day, showing not just how much hormone you have, but how well your body is using and detoxifying them. This makes it especially helpful for identifying imbalances that may be behind long-standing health issues.

Common symptoms that may suggest the DUTCH test could be helpful:

• Fatigue, especially feeling “tired but wired”
• Trouble falling asleep or staying asleep
• Mood swings, anxiety, or low mood
• PMS symptoms, including painful, heavy, or irregular periods
• Low libido
• Weight gain, particularly around the middle
• Hair loss or thinning
• Hot flashes or night sweats
• Difficulty managing stress or feeling burned out
• Fertility challenges

The DUTCH test is a powerful tool to help identify if hormones are contributing to how you’re feeling and to guide a personalized plan to restore balance and improve your energy, mood, sleep, and overall health.

Re Welle offers the test with interpretation at £300. You can also add a package or single consultation to address your symptoms and test results (price start from £100).

The MycoTOX Test is a simple urine test that checks for mycotoxins, which are harmful substances produced by certain types of mold. Exposure to mold—whether in your home, workplace, or through food—can lead to the build-up of these toxins in your body, which may trigger a wide range of health problems, especially if your detox systems are struggling to clear them out.

The MycoTOX test identifies 11 of the most common and dangerous mycotoxins, helping to detect whether mold exposure could be contributing to chronic symptoms. It’s especially helpful if you suspect you’ve been in a water-damaged building or have ongoing, unexplained health issues that haven’t improved with typical treatments.

Common symptoms that may suggest the MycoTOX test could be useful:

• Persistent fatigue that doesn’t improve with rest
• Brain fog, poor memory, or difficulty concentrating
• Chronic sinus issues, congestion, or allergies
• Headaches or migraines
• Unexplained skin rashes or sensitivities
• Shortness of breath or respiratory issues
• Joint or muscle pain without clear cause
• Mood changes like anxiety, depression, or irritability
• Increased sensitivity to chemicals or smells
• Sleep disturbances
• Weakened immune system or frequent infections

If you’ve experienced water damage in your environment, suspect mold exposure, or have lingering symptoms that don’t seem to resolve, the MycoTOX test can be a valuable tool. It helps identify hidden mold-related toxicity and guides a targeted plan to support detoxification and recovery.

Re Welle offers the test with interpretation for £416. You can also add a package or single consultation to address your symptoms and test results (price start from £100).

The GI Pro Advanced Test is a comprehensive stool test designed to give a detailed picture of your gut health. It checks for imbalances in the digestive system by looking at the levels of beneficial bacteria, harmful bacteria, yeast (like Candida), parasites, and other markers of gut function. It also assesses how well you’re digesting food, whether your gut lining is healthy, and if there are signs of inflammation or immune activation in the gut.

This test is especially useful for identifying hidden infections, overgrowths, or digestive weaknesses that might be contributing to ongoing health problems. Because gut health is so closely linked to overall health, understanding what’s happening in your digestive system can be key to feeling your best.

What the GI Pro Advanced test looks at:

• Beneficial and harmful bacteria balance
• Yeast and fungal overgrowth
• Parasites and pathogens
• Digestive enzyme levels and absorption markers
• Inflammation and immune response in the gut
• Gut barrier function (also known as “leaky gut”)

Common symptoms that may suggest the GI Pro Advanced test could be helpful:

• Bloating, gas, or abdominal discomfort
• Diarrhea, constipation, or irregular bowel movements
• Food sensitivities or intolerances
• Ongoing fatigue or low energy
• Skin issues like acne, eczema, or rashes
• Brain fog, mood swings, or anxiety
• Joint pain
• Frequent infections or feeling run-down
• Unexplained weight changes

If you have persistent digestive problems or unexplained symptoms that haven’t improved through diet changes alone, the GI Pro Advanced Test can help uncover the root causes and guide a more targeted and effective plan to restore gut health and overall well-being.

Re Welle offers the test with interpretation for £389. You can also add a package or single consultation to address your symptoms and test results (price start from £100).

Test for SIBO using a simple, at-home hydrogen methane breath test. This SIBO Breath Test uses specialist gas chromatography to assess the presence of small intestinal bacterial overgrowth. Designed to measure the levels of hydrogen and methane, this simple and reliable test is the gold-standard for assessing the presence of SIBO.

Common symptoms associated with SIBO are:

• bloating
• abdominal pain
• constipation, diarrhoea or a combination of both
• excessive gas (belching or flatulence)
• fatigue and brain fog
• nutritional insufficiencies
• food intolerances
• skin issues

Re Welle offers the SIBO test with a 30 minutes consultation and an action plan to address symptoms and test results for £255.00.

The IgG Food Sensitivity Test is a blood test that helps identify foods your immune system may be reacting to. Unlike a classic food allergy (which is usually an immediate and obvious reaction), IgG food sensitivities can cause delayed symptoms—sometimes appearing hours or even days after eating certain foods. This can make it difficult to pinpoint which foods might be contributing to ongoing health issues.

The test measures IgG antibodies against a wide range of common foods (this test check for 120 foods). Elevated IgG levels suggest that your immune system may be responding to those foods, which can lead to chronic, low-grade inflammation and a variety of symptoms.

Common symptoms that may suggest the IgG Food Sensitivity Test could be helpful:

• Bloating, gas, or other digestive discomfort
• Constipation or diarrhea
• Brain fog, trouble concentrating, or memory issues
• Headaches or migraines
• Joint pain or muscle stiffness
• Fatigue or low energy
• Skin problems like acne, eczema, or rashes
• Mood swings, anxiety, or low mood
• Sinus congestion or chronic postnasal drip
• Weight gain or difficulty losing weight

If you suspect certain foods may be affecting how you feel but can’t quite figure out which ones, the IgG Food Sensitivity Test can be a helpful tool. It provides guidance on what foods might be contributing to your symptoms so you can make more informed changes to your diet, reduce inflammation, and support better overall health.

Re Welle offers the test with interpretation for £230. You can also add a package or single consultation to address your symptoms and test results (price start from £100).