A Deeper Look at How Your Body Is Functioning
Functional lab assessments evaluate how the body is functioning across a range of systems, providing insight to the inner workings of the body.
Why Functional Testing
A Different Kind of Assessment
Whole-System Perspective
These assessments are designed to look across multiple body systems.
At-Home Convenience
Most tests use at-home collection kits — urine, dried blood spot, or stool — shipped directly to you with clear instructions.
Practitioner-Guided Review
Every test purchase includes a 1-on-1 education session with Jacob and personalized wellness recommendations.
Featured Tests
Advanced Functional Assessments
Access hundreds of advanced functional lab panels from Mosaic Diagnostics, KBMO, TruDiagnostic, Precision Analytical, Diagnostic Solutions, Genova, Cyrex, and more. The tests featured below are our most recommended — but if you don't see what you're looking for, reach out directly and we'll help you find the right test.
FIT 176 + Gut Barrier Panel
A detailed look at how the body may be responding to specific foods — and the current state of the gut barrier.
Many food sensitivity assessments measure only one type of antibody response. The FIT 176 uses a patented dual-detection method that measures both IgG antibodies and immune complexes (C3d) against 176 foods, colorings, and additives — which may offer a more complete picture of delayed food responses. The included Gut Barrier Panel adds four markers associated with intestinal permeability: Zonulin, Occludin, LPS, and Candida antibodies. Together, these two panels may provide insight into both food responses and the current state of the gut lining.
What It Measures
- IgG1–4 + C3d reactivity to 176 foods, additives & colorings
- Zonulin & Occludin (intestinal tight junction markers)
- LPS (lipopolysaccharide — bacterial endotoxin marker)
- Candida antibodies (fungal overgrowth marker)
Organic Acids Test (OAT)
A broad metabolic snapshot that may reveal how the body is producing energy, processing nutrients, and managing microbial balance.
The Organic Acids Test is one of the most information-dense assessments available in functional wellness. By analyzing 76 metabolic byproducts in a single urine sample, it may offer insight into how efficiently the mitochondria are producing energy, whether microbial imbalances are present in the gut, how the body is processing certain neurotransmitter precursors, and whether gaps in B vitamins, CoQ10, or antioxidants may be present. This assessment may be particularly informative for those interested in energy, cognitive function, and gut balance.
What It Measures
- Yeast & fungal overgrowth markers (Candida, Aspergillus, and others)
- Bacterial imbalance markers
- Mitochondrial function & energy production pathways
- Neurotransmitter metabolites (dopamine, serotonin, norepinephrine)
- B vitamin, CoQ10, and antioxidant status markers
- Oxalate levels and oxidative stress markers
MycoTOX Profile
For those who have spent time in water-damaged environments and want to understand their current exposure level.
Mycotoxins are compounds produced by certain molds that may accumulate in the body over time. They are fat-soluble and may be stored in fatty tissues. The MycoTOX Profile tests for 11 different mycotoxins in urine, including Ochratoxin A, Aflatoxin M1, and Gliotoxin, among others. This assessment may be useful for anyone who has lived or worked in a water-damaged building and wants to understand their current mycotoxin load as part of a broader wellness evaluation.
What It Measures
- Ochratoxin A (OTA)
- Aflatoxin M1 (AFM1)
- Gliotoxin (Aspergillus-derived)
- Trichothecenes: Roridin E, Verrucarin A
- Zearalenone (ZEA)
- Mycophenolic Acid, Sterigmatocystin, Chaetoglobosin A, Citrinin
TruAge COMPLETE
An at-home assessment that may offer insight into biological age across multiple organ systems.
Biological age may reflect the cumulative influence of lifestyle factors, environmental inputs, and nutritional status on cellular function. The TruAge COMPLETE measures overall biological age, speed of aging (DunedinPACE), the biological age of 11 individual organ systems. For those engaged in a wellness protocol, this may help track how lifestyle changes may be influencing cellular aging over time.
What It Measures
- Overall biological age vs. chronological age
- DunedinPACE — speed of aging per calendar year
- Biological age of 11 organ systems (immune, metabolic, liver, kidney, heart, brain, and more)
- Intrinsic vs. extrinsic biological age
- Immune cell composition and immune age
DUTCH Plus
A detailed hormone assessment that looks at not just hormone levels, but how the body may be processing and clearing them.
Standard hormone panels typically measure total hormone levels — a single snapshot that may not capture the full picture. The DUTCH Plus measures sex hormones and their metabolites in dried urine, which may reveal how estrogen, progesterone, testosterone, and cortisol are being produced, converted, and eliminated. The DUTCH Plus also includes the Cortisol Awakening Response (CAR) — a measure of HPA axis function and adrenal rhythm that is not captured in standard hormone testing.
What It Measures
- Estrogen metabolites: E1, E2, E3 + 2-OH, 4-OH, 16-OH pathway breakdown
- Progesterone and testosterone metabolites
- DHEA-S and its metabolites
- Free and metabolized cortisol and cortisone
- Cortisol Awakening Response (CAR) — 5-point morning curve
- Melatonin (6-OHMS) and neurotransmitter metabolites
GI-MAP + Zonulin
A DNA-based stool assessment that may offer a detailed picture of microbial balance and gut barrier function.
The GI-MAP uses quantitative PCR technology — a DNA-based detection method — to identify and quantify the microorganisms present in the gut with a level of precision that conventional stool culture may not match. It assesses H. pylori with virulence factors, various bacteria, parasites, fungi, and beneficial bacteria levels. The Zonulin add-on measures a marker associated with intestinal permeability — which may offer insight into how gut function may be influencing other body systems.
What It Measures
- H. pylori with virulence factors (CagA, VacA, OipA, DupA)
- Various bacteria: C. diff, E. coli O157, Salmonella, Shigella, Campylobacter
- Parasites: Cryptosporidium, Giardia, Entamoeba histolytica, and more
- Fungi and yeast (Candida species)
- Beneficial bacteria: Lactobacillus, Bifidobacterium, Akkermansia
- Immune markers: SIgA, calprotectin; Zonulin (intestinal permeability marker)
Don't See the Test You're Looking For?
If you're looking for a specific assessment, reach out directly.
Inquire About a Specific Test →The Process
From Order to Insight
Order Your Test
Access a broad catalog of advanced functional assessments from leading specialty labs.
Collect at Home
Most tests use at-home collection kits — urine, dried blood spot, or stool.
Lab Processes Your Sample
Your sample is analyzed by the lab, with results typically ready within 2–3 weeks.
1-on-1 Review with Jacob
Every test includes a private education session with Jacob, providing context and identifying areas worth exploring further.
Ready to Take a Closer Look?