Stool
Tryptophan
Measures tryptophan in stool. Relevant for serotonin, melatonin, and metabolism.
€ 130,00
Stool
Transient gut biome
Maps passing and potentially pathogenic bacteria. Detects transient gut flora.
€ 95,00Stool
Maldigestion/malabsorption
Examines pancreatic elastase and bile acids for pancreatic function and nutrient absorption.
€ 135,00Stool
Digestion
Test digestive capacity via stool. Analyzes proteins, fats, and carbohydrates.
€ 65,00Stool
Basic bowel screening
Investigation of gut microbiota, digestion, inflammation, Leaky Gut, dysbiosis, and food allergy.
€ 335,00
Urine
Bacterial colonization of the small intestine (SIBO)
Detection of small intestinal dysbiosis and metabolic disorders. Determination of Indican and Skatole.
€ 55,00
Stool
4D Specialist package
Comprehensive gut health analysis for patients with complex health problems.
€ 975,00Stool
Zonulin
Measure zonulin in stool. Indication for intestinal wall integrity and leaky gut syndrome.
€ 140,00Stool
Fatty acid profile gut
Analyzes short-chain fatty acids in stool. Indication for microbiome balance and fiber fermentation.
€ 125,00Stool
Secretory IgA
Measures IgA antibody in stool. Indication for intestinal immune system and mucous membrane protection.
€ 115,00Stool
Resident gut biome
Determines essential intestinal bacteria in stool, indicating colonization resistance.
€ 125,00Stool
Lysozyme
This test measures lysozyme, an indicator of inflammatory activity in the large intestine.
€ 45,00Stool
Lactoferrin
Measurement of lactoferrin in feces; provides insight into immune deficiencies.
€ 85,00Stool
Firmicutes/Bacteroidetes ratio
Insight into the Firmicutes/Bacteroidetes ratio in relation to body weight.
€ 315,00Stool
Gut therapy screening plus
Extensive intestinal screening including genetic microbiome analysis. DNA sequencing Firmicutes/Bacteroidetes.
€ 1.175,00Stool
Gut therapy screening
Comprehensive screening of intestinal function and microbiome. Includes 15+ test parameters.
€ 900,00Stool
Closed Gut/Leaky Gut screening and mucosal immunity
Distinguishes Closed Gut from Leaky Gut. Analyzes mucosal integrity and gut immunity.
€ 285,00Stool
Beta-defensin 2
Measures antimicrobial peptide in stool. Indication for non-specific mucosal immunity.
€ 90,00Stool
Alpha-1 antitrypsin
Detection of intestinal inflammations, Leaky Gut Syndrome, and food intolerances via Alpha-1-antitrypsin in feces.
€ 45,00Stool
4D Extended package
In-depth investigation of gut health, biodiversity, and biomarkers for persistent complaints.
€ 750,00Stool
4D Orientation package
Orientation of basic microbial distribution in the gut, including main groups and activities.
€ 220,00
Stool
4D Basic Package
Comprehensive basic analysis of intestinal health, including activity measurements and biomarkers.
€ 625,00
Stool
Microbiome
Calculation of insulin resistance from fasting glucose and insulin.
€ 277,00
Frequently asked questions
Answers to what people usually want to know.
How does it work from order to result?
After ordering we generate a referral letter and email you the instructions. You pick a collection point yourself and book an appointment there. Blood is drawn at the location, processed at the lab, and your result arrives digitally.
How quickly can I get tested?
Often within a few working days. How soon you can be seen depends on how busy the location is and the type of analysis. For specialist analyses we first ship collection materials, which takes a bit longer.
Do I need to book an appointment?
At most collection points yes. Some accept walk-ins. This is clearly indicated per location. You choose the location that works best for you.
Do I need to fast before the test?
That depends on the test. Whether fasting is required, and from what time, is clearly stated in the instructions you receive after ordering. No surprises at the counter.
When and how do I receive my result?
It varies per analysis: from same-day to a few working days. Standard values often come back quickly; analyses that go to an external lab can take a bit longer. You get an email with a link to your digital result, including a short explanation per value.
Where can I go for collection?
We work with 1,000+ collection points across the Netherlands. After ordering you'll see which locations near you are available and you pick where you'd like to go.
Didn't find what you're looking for? Request a custom test