Organic Acids Test – Assess Gut, Metabolism & Nutrient Levels
Organic Acids Test – Assess Gut, Metabolism & Nutrient Levels

Organic Acids Test – Assess Gut, Metabolism & Nutrient Levels

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Package Options
 

Discover hidden metabolic imbalances with the Organic Acids Test (OAT). This at-home urine test analyzes 76 biomarkers to detect gut dysbiosis, nutrient deficiencies, oxidative stress, and neurotransmitter imbalances—key factors behind fatigue, brain fog, and digestive issues. Gain personalized insights and expert recommendations to support your health.

✅ Tests for yeast, bacteria, & vitamin deficiencies
✅ Helps identify causes of fatigue, mood changes, & gut issues
✅ Receive personalised dietary, supplement and lifestyle recommendations from our expert team.

GLOBAL DELIVERY

We currently ship to all regions except Australia, Bermuda, Gibraltar, New Zealand and Singapore.

What’s included

The test fee covers expert guidance, full result interpretation and ongoing support from our functional medicine team. Select your preferred package below. When your laboratory report is ready you’ll receive a link to book a 30-minute video consultation.

Ordering for more than one person?
Please set the quantity to 1 per individual so that we can capture a complete medical history for each household member.

Additional Test information

  • Great Plains Mycotoxin & OAT test – for details on the Mycotoxin mould test, please click HERE.

Popular bundle prices (discounted)

  • Lab results & personalised written report
    • OAT only – £390
    • OAT + Myco – £745 (save £125)
  • Lab results & 30-minute Zoom call
    • OAT only – £410
    • OAT + Myco – £765 (save £145)
  • Lab results, 30-minute Zoom call & personalised written report
    • OAT only – £430
    • OAT + Myco – £785 (save £165)

All prices are in GBP and include VAT where applicable.

£390.00
 
 

The Organic Acids Test (OAT) gives a broad metabolic overview with 76 individual markers, making it a useful gauge of a patient’s overall health. It accurately assesses intestinal yeast and bacterial activity; elevated levels of these microbes can contribute to behavioural issues, hyperactivity, movement problems, fatigue and poor immune function. People living with chronic illnesses or neurological disorders frequently excrete unusual organic acids in their urine. These elevations may stem from previous antibiotic courses, diets high in sugar, weakened immunity, infections or inherited factors. The Great Plains OAT also reports on vitamin and mineral status, oxidative stress and neurotransmitter balance, and is the only test of its kind to measure oxalates, compounds strongly associated with many chronic conditions. When the OAT highlights imbalances, targeted interventions—such as tailored supplementation or dietary changes—can be introduced to restore metabolic health.

View Sample Instructions
View Sample Report
Guide to choosing the right toxin test
Clearing Mould From Your Home
Video if the test is for children with autism

Frequently asked question

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).

Vitamin B6

Vitamin C

3-Hydroxy-3-methylglutaric (CoQ10)

Glutaric (Vitamin B2 (Riboflavin))

Glutathione

Pantothenic (Vitamin B5)

Methylmalonic Acid (MMA) (Vitamin B12)

Methylcitric (Biotin) (Vitamin B7)

2-Hydroxybutyric

2-Hydroxyhippuric

2-Hydroxyisocaproic

2-Hydroxyisovaleric

2-Hydroxyphenylacetic

2-Oxo-4-methiolbutyric

2-Oxoglutaric

2-Oxoisocaproic

2-Oxoisovaleric

3-Hydroxybutyric

3-Hydroxyglutaric

3-Indoleacetic

3-Methyl-2-oxovaleric

3-Methylglutaconic

3-Methylglutaric

3-Oxoglutaric

4-Cresol (C. di­fficile)

4-Hydroxybenzoic

4-Hydroxybutyric

4-Hydroxyhippuric

4-Hydroxyphenyllactic

5-Hydroxyindolacetate (5HIAA)

5-Hydroxymethyl-2-furoic

Acetate

Acetoacetic

Aconitic

Adipic

Arabinose

Ascorbic (Vitamin C)

Carboxycitric

Citramalic

Citric

Creatinine

DHPPA (beneficial bacteria)

Dihydroxyphenylacetic (DOPAC)

Ethylmalonic

Fumaric

Furan-2

Furancarbonylglycine

Glyceric

Glycolic

Hippuric

Homogentisic

Homovanillate (HVA)

HPHPA (Clostridia marker)

HVA/DOPAC Ratio

HVA/VMA Ratio

Kynurenic

Lactic

Malic

Malonic

Mandelic

Methylsuccinic

N-Acetylaspartic

N-Acetylcysteine (Glutathione precursor and chelating agent)

Orotic

Oxalic

Phenyllactic

Phenylpyruvic

Phosphoric

Pyridoxic (Vitamin B6)

Pyroglutamic

Pyruvic

Quinolinic

Sebacic

Suberic

Succinic

Tartaric

Thymine

Tricarballylic

Uracil

Vanilmandelate (VMA)

Your kit is posted to you from the UK within 24-48 hours of ordering so you should receive your test kit within a few days via DHL. You can then arrange for DHL to collect your sample using the free returns service. If you are ordering from outside the UK we will ship via DHL or Fedex with return labels.

The kit comes with full instructions on urine collection and storage. We recommend you take your sample first thing in the morning. The sample comes with a freezer bag. Please freeze your sample for a minimum of 4 hours before you arrange for DHL to collect.

When we receive your results back from Mosaic Laboratory in the USA (approx 2 weeks) we will email you your PDF report along with our functional medicine advice to support your recovery depending on the support option you selected at checkout.

Specimen requirements are 10 mL of your first morning urine before food or drink is consumed.

The reason we ask for your first morning urine is that it is normally the most concentrated sample and has the highest PPM (parts per million). If you have bladder issues we suggest picking another time in the day but minimum requirements for an accurate result is 3 hours between urination.

Avoid apples, grapes, pears, and cranberries as well as their juices or products 48 hours before collection. Avoid arabinogalactan, echinacea, reishi mushrooms, and ribose supplements for 48 hours before collection. The reason we use Great Plains is for the high levels of sensitivity of their equipment. When you order testing through our website you will be asked to complete a form highlighting which supplements and medications you take so our functional medicine team know what your current protocol is and can advise / adjust as required.

Mosaic are the best labs in the world for this type of testing. They will immediately reject any samples not dense enough for testing and let us know. If this is the case we will send you another test kit.

No although we recommend not starting testing on children under 2. If the patient is young or incontinent then you may need to manually retrieve a sample via potty / bed pan.