Analyzes short-chain fatty acids in stool. Indication for microbiome balance and fiber fermentation.
Feces Home Test
Collect a small sample with the spatula
Place the sample in the provided tube
Return via medical mail to the lab
Short-chain fatty acids play an important role in gut health. The short-chain fatty acids acetic acid (acetate), propionic acid (propionate), and butyric acid (butyrate) are formed by microbial fermentation of fibers. The gut biome uses various carbohydrates and fibers such as pectin, xylan, resistant starch, or inulin as sources. The ratio is highly dependent on the food consumed, and elevated or reduced levels of the individual fatty acids cannot necessarily be considered pathogenic. On the contrary, it is important that, generally, the ratio of the fatty acids is 3:1:1, approximately 60% acetic acid, 20-25% propionic acid, and 15-20% butyric acid.
Dietary measures have a significant influence on the synthesis of these short-chain fatty acids. Water-soluble fibers such as inulin are very suitable for stimulating the microbial synthesis of fatty acids. Water-insoluble fibers such as, for example, wheat bran can only be fermented to a limited extent, but are very important for binding substances that need to be excreted, such as toxins or conjugated hormones in the intestinal lumen. A balanced intake of water-soluble and insoluble fibers is therefore advisable.
The scientific support for this test within mainstream Dutch healthcare is limited. The test is not included in NHG/FMS standard guidelines.
Rationale for this test
De wetenschappelijke onderbouwing voor deze test binnen de Nederlandse reguliere zorg is beperkt. Hoewel korteketenvetzuren een rol spelen in de darmgezondheid, is het meten van deze stoffen in ontlasting niet opgenomen in de standaard-richtlijnen van NHG of FMS voor darmklachten. De klinische betekenis van afwijkende waarden en de interpretatie van de verhoudingen zijn niet gestandaardiseerd in de reguliere Nederlandse geneeskunde.
Dutch clinical guidelines and healthcare organisations
International scientific literature
We recommend consulting these independent sources before ordering a preventive health check.
Brochure on preventive health checks: careful choice, reliability, pros and cons, checklist.
Independent information about preventive health checks from the National Institute for Public Health and the Environment.
Reliable patient information about illnesses and complaints from Dutch GPs (NHG).
Public-facing website of the Dutch Society for Clinical Chemistry with explanations of blood tests and laboratory values.
Answers to what people usually want to know.
View instructionsFull instructions with visual guidanceAfter ordering we ship the kit to your home. You collect a small sample with the included scoop, keep it cool and return it in the envelope. You receive the result digitally by email.
Lay plastic film over the toilet or use a clean container. Scoop from the middle of the stool and avoid contact with urine or toilet water.
A small scoop with the included spoon is enough — about half a teaspoon. More is not better.
Maximum 24 to 48 hours in the fridge. Send as soon as possible and preferably early in the week, not just before the weekend.
Some analyses (like calprotectin) ask you to avoid NSAIDs or certain supplements 24-48 hours before collection. Check the instructions with your kit for the exact preparation for your test.
Stool analyses typically take about a week after the lab receives your sample. You get an email with a link to your digital result, including explanation per value.
In the included return envelope with free medical shipping. Drop it in the mailbox; the lab processes your sample as soon as it arrives. For some tests it's important to send it the same day — the instructions make this clear.
Feel free to contact us via WhatsApp, email or phone. We're happy to help you before, during or after your test. If the collection doesn't work, we'll arrange a solution or send new materials — no hassle.
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