Gut Health Testing
Gut Microbe Metabolites Test
Also known as: Microbial Organic Acids Test (MOAT)
Also searched as: urine candida test · yeast and bacteria urine test · Clostridia test
The yeast and bacterial markers from the full organic acids test — a focused gut check or follow-up.
This urine test contains the microbial section of the Candida, Metabolic & Vitamins Test: by-products made by yeast, Clostridia, and other gut bacteria. It's most useful as a follow-up — to see whether a gut protocol has shifted things — or when gut microbes are the only question. You may also see it called "urine candida test", "yeast and bacteria urine test", or "Clostridia test".
What the Gut Microbe Metabolites Test measures
Yeast & Fungal Markers
By-products that rise when yeast or fungi are overgrown.
- Citramalic acidA yeast-associated by-product.
- 5-Hydroxymethyl-2-furoic acidA yeast and fungal marker.
- 3-Oxoglutaric acidAssociated with yeast overgrowth.
- Furan-2,5-dicarboxylic acidA yeast and fungal marker.
- FurancarbonylglycineA yeast and fungal marker.
- Tartaric acidDietary and yeast-associated marker.
- ArabinoseA classic yeast by-product.
- Carboxycitric acidA yeast-associated marker.
- Tricarballylic acidA yeast and fungal marker.
Bacterial Markers
By-products of gut bacteria, including beneficial species.
- Hippuric acidReflects gut bacterial activity and polyphenol metabolism.
- 2-Hydroxyphenylacetic acidA bacterial by-product.
- 4-Hydroxybenzoic acidA bacterial by-product.
- 4-Hydroxyhippuric acidA bacterial by-product.
- 2-Hydroxyhippuric acidA bacterial by-product.
- DHPPAA marker of beneficial bacteria.
Clostridia Markers
By-products of Clostridia species that can affect brain and behavior.
- HPHPAA Clostridia by-product.
- 4-CresolA Clostridia by-product.
- 4-Hydroxyphenylacetic acidA Clostridia-associated marker.
- 3-Indoleacetic acidA bacterial by-product from tryptophan.
Other
- 3-Hydroxy-3-methylglutaric acidA CoQ10-related marker.
Who the Gut Microbe Metabolites Test is for
A good fit as a recheck after a gut protocol, or when yeast and gut bacteria are the only question and a full organic acids test isn't needed.
- Bloating or digestive discomfort
- Brain fog
- Fatigue
- Rechecking after a gut protocol
Two ways to get the Gut Microbe Metabolites Test
Request This Lab
- At-home or in-office collection, depending on the test
- Our team helps you order and set up your kit
- Add Tiffeny Parker as your practitioner so I can see your results
Personalized with Tiffeny
RecommendedWant your results personally reviewed?
- One-on-one interpretation of your results
- Written Root Cause Report
- Personalized 12-week protocol
✦ Program members: practitioner discount applied. See member perks →
Labs are processed by a CLIA-certified laboratory partner. To protect your privacy, I can only see your results if you add Tiffeny Parker as your practitioner. Lab order links are affiliate links; I may earn a commission at no extra cost to you.
What results can reveal
- Yeast or fungal overgrowth activity
- Clostridia and other bacterial imbalances
- Whether a gut protocol is working
How we interpret it
We read every panel through a functional lens — optimal reference ranges, ratios, and cross-panel patterns. Results become part of your written Root Cause Report and your personalized 12-week protocol.
Most often a follow-up — we compare markers before and after a gut protocol to confirm the approach is shifting things.
Often paired with
Candida, Metabolic & Vitamins Test
Yeast, bacteria, mitochondrial energy, neurotransmitters, oxalates, and vitamin needs — from one urine sample.
Gut Bacteria & Parasite Test
Bacteria, yeast, parasites, H. pylori, digestion, and gut inflammation.
Advanced Gut Microbiome Test
DNA-based stool testing for a deeper look at gut pathogens, microbiome balance, and digestion.
Often used alongside this lab
Ready-made options people often use while working on these results. Program members get a personalized plan, with a practitioner discount applied.
Candida & Bacterial Optimizer (CBO) Protocol
A full kit for rebalancing yeast and bacteria in the gut.
See in the shop →Common questions
Not sure which panels you need?
Start with the Root-Cause Fit Assessment. Takes about 3–5 minutes. If it looks like we're a good fit, you'll be invited to schedule a 45-minute consultation to discuss your health history, goals, and whether this program is the right next step for you.
Educational information only. Functional lab testing is not intended to diagnose, treat, cure, or prevent any disease. Results are reviewed in the context of your full health history.