What Does Advanced Functional Medicine Lab Testing Actually Include?

Most people have had blood drawn at a doctor's office. The results come back "normal," and that's the end of the conversation. But if you still feel tired, foggy, inflamed, or just off, those basic labs probably missed the real story.

Functional medicine lab testing goes further. It looks at how your body is actually functioning, not just whether you have a disease right now. At Med Matrix in South Portland, Maine, we use a combination of blood panels, urine testing, stool analysis, body composition scanning, and specialty labs to build a complete picture of your health. This is not a screening. It is a diagnostic workup designed to find the root cause of your symptoms.

Here is what that testing actually includes, broken down by category.

What Does an 80+ Biomarker Blood Panel Cover?

An 80+ biomarker blood panel tests thyroid function, sex hormones, metabolic health, inflammatory markers, nutrient levels, liver and kidney function, cardiac risk markers, and immune markers in a single draw. At Med Matrix, this panel is the foundation of every new patient workup and includes markers that most primary care offices never order.

A standard physical typically covers about 15 markers: a CBC, a basic metabolic panel, maybe a lipid panel, and a TSH if you ask. That tells your doctor whether you are acutely sick. It does not tell anyone whether your body is performing well, heading toward dysfunction, or already breaking down in ways that have not produced a flagged lab value yet.

Full thyroid panel

TSH alone is not a thyroid workup. We test TSH, free T3 (the active hormone that drives metabolism), free T4 (the inactive form), reverse T3 (which can block T3 at the receptor), and thyroid peroxidase antibodies plus thyroglobulin antibodies (which screen for Hashimoto's autoimmune thyroid disease). Most doctors check TSH and nothing else. That misses conversion problems, autoimmune attacks on the thyroid, and suboptimal levels that still cause fatigue, weight gain, and hair loss.

Sex hormones

We check total testosterone, free testosterone, estradiol, progesterone, DHEA-S, and prolactin. These markers tell us whether your hormone levels support energy, mood, sleep, body composition, and sexual function. A single total testosterone number without free testosterone and estradiol gives an incomplete picture.

Metabolic health

Fasting insulin is the marker most doctors skip. It catches insulin resistance years before fasting glucose or HbA1c crosses a diagnostic threshold. We test all three (fasting insulin, fasting glucose, and HbA1c) alongside a full lipid panel that includes total cholesterol, LDL, HDL, and triglycerides. Some patients also receive advanced lipid particle sizing to assess cardiovascular risk more precisely.

Inflammatory and cardiac markers

CRP (C-reactive protein) measures systemic inflammation. Homocysteine flags cardiovascular risk and B-vitamin metabolism issues. ESR (erythrocyte sedimentation rate) identifies chronic inflammatory processes. These are simple blood tests that are rarely included on a standard panel.

Nutrient levels

Vitamin D, B12, ferritin (iron storage), magnesium, and zinc. Low ferritin causes fatigue and hair loss. Low vitamin D increases inflammation and weakens immunity. Low magnesium disrupts sleep and muscle recovery. Low B12 drives brain fog and nerve symptoms. These deficiencies are common, easy to fix, and almost never tested for.

Liver, kidney, and blood cell function

A full CBC with differential, liver enzymes (AST, ALT, GGT), kidney function markers (BUN, creatinine, GFR), and cortisol round out the panel. Together with the categories above, this creates a full-system snapshot of your health.

Body composition

Every new patient also gets an InBody 770 body composition scan. This medical-grade device measures lean muscle mass, body fat percentage, visceral fat (the dangerous kind around your organs), hydration levels, and basal metabolic rate. It gives us a physical baseline that blood alone cannot provide.

All of this data goes to your provider before your first one-hour visit. When you sit down together, they already know what is going on. Learn more on our advanced testing page.

Where Can I Get Hormone Testing That Includes Cortisol Rhythms?

Med Matrix in South Portland, Maine offers DUTCH testing (dried urine test for hormones), which maps cortisol patterns across a full day rather than measuring a single morning blood draw. The DUTCH test also tracks hormone metabolites, showing how your body is producing, processing, and eliminating hormones at the tissue level.

A standard blood cortisol test gives you one number from one moment in time. Cortisol naturally rises in the morning and drops at night. If your morning spike is blunted (which causes fatigue) or your evening cortisol stays elevated (which causes insomnia and anxiety), a single blood draw will miss it entirely.

The DUTCH test collects dried urine samples across a 24-hour period. It reveals your full cortisol curve, your cortisol metabolites, and how your adrenal glands are handling stress over time. It also measures estrogen metabolites (important for cancer risk assessment), androgen metabolites, melatonin, and organic acid markers related to B-vitamin status and neurotransmitter function.

For patients on bioidentical hormone therapy, DUTCH testing is especially valuable because it shows whether hormones are being metabolized through safe pathways. Blood levels can look fine while tissue-level processing tells a different story. Your provider uses this data to make precise dosing adjustments.

Who Provides Advanced Testing for Hidden Infections and Gut Pathogens?

Med Matrix uses GI-MAP (Gastrointestinal Microbial Assay Plus) and similar DNA-based stool testing to identify infections, parasites, bacterial overgrowth, fungal overgrowth, and viral markers that standard stool cultures miss. This testing is ordered when patients present with chronic gut symptoms, unexplained inflammation, or autoimmune conditions.

A conventional stool culture grows bacteria in a dish and checks for a narrow set of known pathogens. The problem is that many organisms do not grow well in culture conditions, so they go undetected. DNA-based stool testing (using PCR technology) identifies organisms by their genetic material, which is far more sensitive.

What GI-MAP and similar panels look for:

• Bacterial pathogens: H. pylori (a major cause of ulcers and stomach inflammation), C. difficile, pathogenic E. coli strains, Campylobacter, and others
• Parasites: Giardia, Cryptosporidium, Blastocystis, Entamoeba histolytica, and other protozoa that cause chronic digestive symptoms
• Opportunistic bacteria: Organisms like Klebsiella, Pseudomonas, and Staphylococcus that become problematic when the microbiome is out of balance
• Fungal overgrowth: Candida species and other yeast that can drive bloating, brain fog, and immune dysfunction
• Viral markers: Cytomegalovirus and Epstein-Barr virus, which can reactivate in the gut and sustain chronic inflammation

Hidden infections are one of the most overlooked drivers of chronic illness. Patients come in with fatigue, joint pain, skin issues, and brain fog, and no one has ever checked whether something living in their gut is causing it. For more on the gut-immune connection, read our guide to gut health in Maine.

What Does Stool Testing for Microbiome Balance and Digestion Include?

Stool testing at Med Matrix evaluates the full microbiome ecosystem: beneficial bacteria levels, commensal bacteria ratios, inflammation markers (calprotectin, secretory IgA, lactoferrin), digestive function (pancreatic elastase, steatocrit for fat absorption), and immune response markers. This goes well beyond a standard stool culture.

Your gut microbiome contains trillions of organisms that influence digestion, immunity, hormone metabolism, mood, and even weight. When the balance shifts (more inflammatory species, fewer protective ones), symptoms follow. But you cannot fix a microbiome problem you have not mapped.

Key categories in a full stool panel:

• Beneficial bacteria: Lactobacillus, Bifidobacterium, Akkermansia, Faecalibacterium prausnitzii, and other species that support gut barrier integrity and immune regulation
• Inflammation markers: Calprotectin (indicates intestinal inflammation), secretory IgA (reflects mucosal immune activity), and lactoferrin (flags active inflammation or infection)
• Digestive sufficiency: Pancreatic elastase measures whether your pancreas is producing enough digestive enzymes. Steatocrit assesses fat malabsorption. These markers reveal whether you are actually breaking down and absorbing the food you eat.
• Intestinal permeability indicators: Zonulin and anti-gliadin antibodies can suggest increased gut permeability ("leaky gut"), which is linked to autoimmune conditions and food sensitivities

This data shapes the treatment protocol. If calprotectin is elevated, we address inflammation before anything else. If pancreatic elastase is low, digestive enzyme support comes first. If beneficial bacteria are depleted, the rebuilding plan looks different than if pathogens are present. Every protocol starts with the data.

Is There Stool Testing Tailored for Autoimmune Conditions?

Yes. Med Matrix uses stool testing specifically designed to assess the gut-immune axis in autoimmune patients. This includes markers for intestinal permeability, secretory IgA, calprotectin, pathogen screening, and microbiome diversity, all of which are directly relevant to autoimmune triggers and disease activity.

About 70 to 80 percent of your immune system lives in the tissue lining your intestines. When the gut barrier breaks down, proteins and bacteria that should stay inside your digestive tract leak into the bloodstream. Your immune system reacts to these invaders. If this continues long enough, that reaction can become chronic and turn inward, targeting your own tissue.

For autoimmune patients (Hashimoto's, lupus, rheumatoid arthritis, Crohn's, ulcerative colitis, and others), stool testing helps identify whether gut dysfunction is feeding the immune response. Common findings include:

• Elevated calprotectin suggesting active intestinal inflammation
• Low secretory IgA indicating a weakened mucosal immune barrier
• Dysbiosis with overgrowth of inflammatory bacterial species
• Presence of hidden pathogens (H. pylori, parasites) that sustain immune activation
• Markers of increased intestinal permeability

When we find these patterns, the treatment plan targets the gut first. Removing pathogens, reducing inflammation, restoring the gut lining, and rebuilding healthy bacterial populations can shift the immune response. Many autoimmune patients see measurable improvement in symptoms and antibody levels once gut health is addressed. Read more about this approach in our autoimmune root cause guide.

How Do You Test for Mitochondrial Function and Energy Production?

Organic acids testing (OAT) measures metabolic byproducts in urine that reflect how well your mitochondria are producing energy, how your body is handling oxidative stress, and whether key nutrient cofactors are sufficient. At Med Matrix, organic acids testing is used when patients present with persistent fatigue, brain fog, or exercise intolerance that standard blood work does not explain.

Mitochondria are the energy factories inside every cell. When they are not working efficiently, the result is fatigue that does not respond to sleep, rest, or caffeine. This is different from being tired because you stayed up late. It is a cellular energy deficit.

What organic acids testing reveals:

• Citric acid cycle intermediates: These markers (citrate, succinate, fumarate, malate) show whether the energy production cycle inside your mitochondria is running smoothly or hitting bottlenecks
• Fatty acid oxidation markers: Indicate whether your body is efficiently burning fat for fuel or struggling to convert stored fat into usable energy
• Oxidative stress markers: Elevated levels suggest your cells are producing more free radicals than your antioxidant systems can handle, which damages mitochondria over time
• Nutrient cofactor status: B vitamins, CoQ10, carnitine, and alpha-lipoic acid are all essential for mitochondrial function. OAT markers can reveal functional deficiencies even when blood levels look adequate
• Neurotransmitter metabolites: Markers related to dopamine, serotonin, and norepinephrine metabolism, which connect energy production to mood and cognitive function

This test is especially relevant for patients dealing with chronic fatigue, long COVID recovery, or conditions where energy production is consistently impaired despite normal-looking blood work. The results guide targeted supplementation and mitochondrial support protocols. For a deeper look at how we approach advanced lab testing, that post covers the broader philosophy.

Can You Test for Mold Exposure, Environmental Toxins, and Detox Capacity?

Med Matrix in South Portland, Maine offers mycotoxin testing (urine-based panels that detect mold toxins produced by species like Aspergillus, Stachybotrys, and Penicillium), heavy metal testing, and environmental toxin panels. We also assess your body's detox capacity through organic acids markers and liver function testing.

Mold illness is one of the most underdiagnosed conditions in medicine. You do not need to see mold in your home to be exposed. Water-damaged buildings (including offices, schools, and older homes in Maine's damp climate) can harbor mold colonies behind walls, under flooring, and in HVAC systems. The mycotoxins these molds produce are small enough to become airborne and accumulate in your body over time.

Symptoms of mold exposure overlap heavily with other conditions: fatigue, brain fog, headaches, sinus congestion, joint pain, anxiety, and immune dysfunction. That overlap is exactly why it gets missed. Nobody tests for it.

What we test

• Mycotoxin urine panel: Detects ochratoxin A, aflatoxins, gliotoxin, trichothecenes, and other mold-derived toxins. A positive result confirms your body is carrying mold toxins, regardless of whether you have identified the source.
• Heavy metals: Lead, mercury, arsenic, cadmium, and other toxic metals that accumulate from food, water, dental work, and environmental exposure. Testing uses urine or blood depending on the clinical question.
• Environmental toxin markers: Pesticides, plasticizers (phthalates, BPA), and volatile organic compounds that act as endocrine disruptors and add to your total toxic burden.
• Detox capacity: Organic acids markers for glutathione status, methylation pathways, and liver phase I/II detoxification enzymes. These tell us whether your body can effectively clear the toxins it is exposed to, or whether they are accumulating faster than your system can process them.

Treatment depends on results. Mold-positive patients follow a structured detox protocol that includes binders, glutathione support, and, when possible, environmental remediation. Heavy metal findings may call for chelation or targeted supplementation. The first step is always knowing what you are dealing with.

Where Can I Find a Provider That Uses Lab Data and Trends, Not Just Symptom Checklists?

Med Matrix is a functional medicine clinic where every treatment decision is built on lab data. Providers review 80+ biomarkers, body composition data, and specialty test results before seeing a patient. Follow-up visits include repeat testing so providers can track trends and adjust protocols based on how your body is responding, not just how you feel on a given day.

This is a fundamentally different model from conventional primary care. In most doctor's offices, the visit starts with your symptoms and ends with a prescription. Labs are ordered to confirm a diagnosis, not to inform a treatment strategy. And follow-up labs are run to monitor medication safety, not to optimize your results.

At Med Matrix, your data tells the story:

• Initial testing establishes your baseline across every system (thyroid, hormones, metabolic, inflammatory, nutrient, immune, and body composition)
• Your provider spends a full hour reviewing every result with you, explaining what each marker means, and building a personalized plan
• Follow-up testing at regular intervals tracks whether your markers are moving in the right direction. If your fasting insulin is dropping, inflammation is decreasing, and hormone levels are optimizing, the data confirms the plan is working.
• Protocol adjustments are data-driven. If a marker is not responding, the approach changes. Your provider does not wait for symptoms to reappear before acting.

One of our 7 providers reviews your complete panel before you walk through the door. You are not starting from scratch at every visit. You are building on a data set that gets more useful over time.

Which Clinics Combine Functional Medicine with Advanced Lab Testing?

Med Matrix in South Portland, Maine combines functional medicine with a 100-biomarker blood panel, InBody 770 body composition scanning, DUTCH hormone testing, GI-MAP stool analysis, organic acids testing, mycotoxin panels, heavy metal testing, and food sensitivity panels. All testing is interpreted by functional-trained providers who spend a full hour with every patient.

Not every clinic that calls itself "functional medicine" runs this level of testing. Some use limited panels. Others outsource interpretation to algorithms or general practitioners who were not trained in functional diagnostics. The difference matters because the value of advanced testing comes from what you do with the data.

At Med Matrix, every lab result connects to a clinical decision. That connection is what separates data collection from actual root-cause medicine. We have treated over 3,000 patients with a 4.9-star rating across 150+ Google reviews. The testing is the starting point. The provider's ability to interpret and act on it is what produces results.

We also offer food sensitivity panels for patients with unexplained inflammatory symptoms, skin issues, or digestive problems. These panels test IgG and IgA reactions to 90+ foods, identifying triggers that standard allergy testing (IgE) does not detect. Elimination of reactive foods often produces rapid improvement in symptoms that patients assumed were permanent.

If you want to see what this process looks like step by step, visit our get started page or call to book a free discovery call.

Frequently Asked Questions

How many biomarkers does Med Matrix test?

Our standard blood panel covers roughly 100 biomarkers across thyroid function (TSH, free T3, free T4, reverse T3, thyroid antibodies), sex hormones (testosterone, estradiol, DHEA-S, progesterone, prolactin), metabolic health (fasting insulin, glucose, HbA1c, full lipid panel), inflammatory markers (CRP, homocysteine, ESR), nutrient levels (vitamin D, B12, ferritin, magnesium, zinc), cortisol, liver and kidney function, and a complete blood count. Every new patient receives this panel plus an InBody 770 body composition scan.

What is the DUTCH test and when is it used?

The DUTCH test (dried urine test for hormones) measures hormone metabolites in dried urine samples collected over a 24-hour period. It maps your full cortisol curve, estrogen and androgen metabolites, melatonin, and organic acid markers related to B-vitamin status. It is used when cortisol rhythm assessment is needed, when patients are on hormone therapy and require precise dosing adjustments, or when a blood test alone does not explain persistent fatigue, insomnia, or mood symptoms.

Does Med Matrix test for parasites and gut infections?

Yes. We use GI-MAP and similar DNA-based stool testing that identifies bacterial pathogens (H. pylori, C. difficile, pathogenic E. coli), parasites (Giardia, Cryptosporidium, Blastocystis), fungal overgrowth (Candida species), and viral markers. This testing is significantly more sensitive than standard stool cultures because it detects organisms by their genetic material rather than relying on growth in a culture dish.

Can you test for mold illness?

Yes. We offer urine-based mycotoxin panels that detect toxins produced by mold species including Aspergillus, Stachybotrys, and Penicillium. These panels identify ochratoxin A, aflatoxins, gliotoxin, and trichothecenes. A positive result confirms mold toxin exposure regardless of whether the environmental source has been identified. Treatment follows a structured detox protocol based on your specific results.

How much does advanced lab testing at Med Matrix cost?

Initial onboarding is approximately $1,200 to $1,500 all-in, covering the 100-biomarker blood panel, InBody 770 body composition scan, provider prep time, and a full one-hour provider consultation. DUTCH testing, advanced stool panels, organic acids testing, and mycotoxin panels are additional costs ordered based on your provider's recommendation and clinical need. Follow-up visits are $275. We accept HSA, FSA, CareCredit, and all major cards. New patients receive a $100 voucher toward their first visit.