Are You Unsure Which Test You Need?
Candida Test - Stool Test & Oral Swab
Candida Test - Stool Test & Oral Swab
The Candida Test offers a dual-sample approach to detecting fungal and yeast overgrowth, using both a stool test and oral swab to evaluate Candida species and related strains. This test is valuable for patients with chronic digestive symptoms, recurrent oral thrush, sugar cravings, fatigue, or suspected dysbiosis. Results help guide antifungal, dietary, and microbiome-rebalancing interventions.
✅ Screens for Candida spp. and other fungal organisms in gut and oral environments
✅ Useful in assessing chronic GI symptoms, thrush, fatigue & systemic yeast issues
This test is only available for UK & European delivery.
You will be asked to fill out a patient form at checkout which will give us more information on your symptoms, current medications and supplement intake.
This kit is shipped to you via courier with free return postage (except Jersey, Guernsey and Isle of Man)
Results take 2-3 weeks.
Lab Test Results Only - no support = £130
Lab Test Results & Personalised Written Report with Supplement List = £150
Lab Test Results & 30 Minute Zoom Call = £170
Lab Test Results & 30 Minute Zoom Call & Personalised Written Report with Supplement List = £190
The Candida Test is a home-to-lab test for anyone wanting to check for yeast and fungal overgrowth in both the gut and the mouth. It uses two samples (a small stool sample collected at home and an oral swab returned to our laboratory for analysis). Combining both sample sites gives us a clearer picture than a single-site test, since candida frequently colonises the digestive tract and the oral cavity at the same time, and either site can drive the symptoms most often associated with candida overgrowth.
We recommend this test for people experiencing chronic digestive symptoms, recurrent oral thrush, persistent sugar cravings, unexplained fatigue, brain fog, or skin problems and recurring fungal infections that may point to fungal overgrowth in the gut, mouth, or both. It is also frequently chosen by people who suspect a wider gut imbalance after a course of antibiotics, by those exploring possible candida or yeast involvement in long-standing symptoms, and as part of a broader investigation of gut health when routine GP testing has not provided answers.
This test is suitable from any age.
FAQs
Q. How do you support me with my results?
In ADDITION to your lab report we provide the following options which are INCLUDED in the package prices:
A) Follow up personalised written report produced by our clinical team highlighting dietary and lifestyle advice plus links to supplement protocols, specific doses and any further testing requirements included. We use the patient information you provide us at checkout along with your results to compile personalised action points for you.
OR
B) Follow up 30-minute video call to discuss your results and answer any questions you have. Once the lab has completed your results you will be sent these via email with a link to book a time and day online. You will also then be given the option to upgrade your 30-minute call to a 45-minute call for an additional £30 if you wish. During the call your practitioner will explain the results in more detail and what they mean for you. After your call you are sent a personalised list of supplements & the dose your practitioner advises with links to purchase from our supplements store. This is for your convenience. You are of course welcome to purchase supplements elsewhere. You will also be provided with a list of follow up tests should this be required plus a copy of your recorded zoom call which you can download and keep.
OR
C) Both Zoom call and written report with personalised next steps (Zoom call is first and written report follows).
Q. What does the sample determine?
- Candida albicans
- Candida spec.
- Geotrichum candidum
- Yeast
- pH-value of the stool
Q. What symptoms is this test suitable for?
- Swollen stomach
- Flatulence
- Constipation
- Food intolerance
- Burning stomach acid
- Sensitive areas on the body
- Fungal infections on the skin or nails
- Eczema
- Diaper rash
- Pain during intercourse
- Vaginal itching
- Menstrual disorders
- Prostate problems
- Bladder infections
- Hemorrhoids
- Chronically stuffy nose
- Bad breath
- Fatigue
- Sleeping disorders
Q. What will the results tell me?
Your results will provide detailed information about whether your pH-Value, candida albicans, geotrichum candidum and yeast levels are normal, low, or high compared to reference ranges in your age group.
pH-Value
Fecal pH is influenced by numerous factors, but is largely dependent on the fermentation of fiber by the beneficial flora of the gut. With a balanced diet the fecal pH should lie between 6.2 and 6.8. Acid fecal pH indicates disorders of intestinal ecology. An alkaline fecal pH indicates an imbalanced intestine flora. It is possible that proteolytic putrefactive germs are predominant, which raise the fecal pH through alkaline metabolites (e.g. due to a high-protein diet).
Candida albicans
The genus Candida is comprised of approximately 200 different species. Candida albicans is the most common strain of them. It is a normal part of the gut flora and most people have some level of Candida albicans in their intestines. But a combination of factors can lead to an overgrowth, which then leads to several undesirable symptoms including fatigue, weight gain, joint pain, and gas.
Candida spec.
Increased candida species indicates deficiencies in colonisation resistance, disturbances of the intestinal flora and/or a defect mucosa. Candida species may burden the body with toxic metabolites. Some patients respond to even low rates of yeast overgrowth.
Geotrichum candidum
Geotrichum candidum belongs to the Endomyceteaceae family. This organism can be found in soil, dairy products and in human skin and mucosae. Symptoms of Geotrichum infection have been associated with diarrhea and enteritis.
Yeast
An infection with yeasts can have many reasons. Possible causes are things like corticosteroid therapy, stress, diabetes, malnutrition or birth control pills. All of them weaken the immune system and a weakened immune system cannot control yeast or help you get rid of it. Antibiotics are also a common cause of yeast infection because they destroy the good bacteria that keep it under control.
Q. Why shouldn't you eat unwashed fruit or vegetables before using the mouth swab?
There are often tiny traces of fungi on unwashed fruit and vegetables. These are completely harmless for a healthy body, since the immune system prevents the fungi from multiplying in the body. Nevertheless, the fungi are still inside your mouth for a certain time and can therefore be detected in the test. In order to assure correct results, it is advisable to wash fruit and vegetables well in the 2–3 days before the test.
Q. How do Candida infections develop?
Candida is everywhere around us and usually also present in small numbers in our intestines. However, the immune system and our gut bacteria prevent it from spreading. If the intestine is weakened, for example when the "good" intestinal bacteria have been decimated by antibiotics, the fungus can multiply unhindered.
Q. Why does this candida test use both a stool sample and an oral swab?
Candida and other yeast organisms can colonise multiple sites in the body, and the gut and the mouth are the two most clinically informative places to look. A stool test alone can miss oral overgrowth, which often shows up as a white tongue coating, recurrent thrush, or bad breath even when digestive symptoms are mild. An oral swab alone misses what is happening in the gut, where candida overgrowth most often drives systemic symptoms like fatigue, sugar cravings, and brain fog. Testing both sites at once gives us a fuller picture of where the imbalance sits, which in turn shapes the kind of dietary, antifungal, and microbiome-rebalancing support most likely to help.
Q. Should I stop antibiotics, probiotics or antifungals before this test?
Yes, and the timing matters for accurate results. We ask that you wait at least two weeks after finishing a course of antibiotics or probiotics before collecting your samples, because both can temporarily change the balance of organisms in the gut and skew the result. For the oral swab, please avoid using antifungal or antibacterial mouthwash before collection. If you are currently taking prescription antifungal medication or any other medication you think may affect the result, get in touch with our team before ordering and we'll advise on the right timing.
Q. Is this candida test suitable for children?
Yes, this test is suitable from any age, including babies and young children. The collection method is non-invasive: a small stool sample taken at home and a brief mouth swab are all that's required, with no blood draw involved. We're often asked about this test for children with persistent digestive symptoms, recurrent oral thrush, eczema, nappy rash, or behavioural and concentration issues that parents suspect may be linked to gut imbalance. If you'd like to discuss whether the test is right for your child specifically, our team is happy to help before you order.
Q. What is the difference between candida overgrowth and a candida infection?
Candida is a yeast that lives naturally in small numbers in most people's gut, mouth, and other mucosal surfaces. The two terms most often used can be confusing because they describe different scales of the same picture.
Candida overgrowth refers to levels that have risen above the healthy range but where the body is broadly coping. The symptoms tend to be diffuse and non-specific: bloating, sugar cravings, fatigue, brain fog, skin issues, or recurrent low-grade thrush. This test is designed to identify overgrowth at this stage so dietary and microbiome support can be put in place before things escalate.
A candida infection (sometimes called candidiasis) describes a clinical illness where candida has multiplied to the point of causing visible or systemic problems, such as obvious oral thrush, vaginal candidiasis, or in rare cases more serious infections that need medical attention rather than nutritional support.
The distinction matters because the right response depends on which scale you're at. Most people using this test are looking for the earlier, sub-clinical end of the spectrum.
Q. How does this candida test compare to a comprehensive stool microbiome test?
This Candida Test focuses specifically on yeast and fungal overgrowth in the gut and mouth, plus stool pH as an indirect marker of gut balance. It is a targeted, lower-cost option for people whose symptoms point clearly towards candida or fungal involvement.
A comprehensive microbiome test such as the GI360 Complete we offer looks at a much broader range of organisms, including beneficial bacteria, opportunistic bacteria, parasites, worms, and digestive markers like inflammation and pancreatic enzyme function, alongside candida. This kind of test is more appropriate when symptoms are complex, when previous testing has been inconclusive, or when you want a complete picture of the gut ecosystem in one go.
If you are unsure which is right for you, our team can advise based on your symptoms and what you're hoping to learn.



