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The Complete Food Sensitivity Panel tests IgG antibodies against 286 food antigens from a single blood draw. IgG reactions are delayed immune responses that can cause symptoms like bloating, fatigue, brain fog, headaches, skin issues, and GI distress hours to days after eating, making them nearly impossible to identify through observation alone. This panel uses foodANALYZER technology with multiplex ELISA and nano-bead technology that blocks cross-reactive determinants for the most accurate IgG results available. Results in 24 hours. Your provider uses the data to build a targeted elimination and rotation diet plan around your specific reactive foods.
This panel identifies delayed IgG immune reactions to 286 foods across every major dietary category: dairy, meats, seafood, eggs, grains, nuts, seeds, legumes, fruits, vegetables, spices, and more. It is designed for patients with persistent digestive issues, unexplained fatigue, skin problems, headaches, or brain fog who suspect food is a contributing factor but cannot pinpoint which foods through observation.
A standard blood draw collects 1 mL of serum. No fasting required. No dietary preparation needed. The sample is analyzed using multiplex ELISA with nano-bead technology that measures IgG antibodies for each of the 286 food antigens while blocking cross-reactive determinants. Results are delivered in an industry-leading 24 hours. Your provider reviews the report and builds an elimination strategy around it.
Most food sensitivity panels test 80 to 150 foods and take weeks to return results. This panel tests 286 foods in 24 hours using nano-bead CRD blocking that most IgG tests lack. More importantly, your provider doesn't just hand you a PDF of reactive foods. They interpret the results, prioritize which eliminations matter most, build a rotation plan, and connect the findings to your broader wellness strategy.
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No fasting is required. No dietary changes are needed before the test. In fact, the most accurate results come when you have been eating your normal diet in the weeks leading up to the draw, since the test measures IgG antibodies that your immune system has produced in response to foods you are actually consuming. If you have already eliminated a food for an extended period, your IgG levels for that food may be low simply because you haven't been exposed to it recently, not because you are not sensitive to it. For the most useful results, eat normally. The blood draw is performed at our clinic at 2117 N Halsted St in Lincoln Park and takes approximately 5 minutes. For patients outside Chicago, we can order your draw at a lab center near you.
The Complete Food Sensitivity Panel measures total IgG antibodies against 286 food antigens spanning every major dietary category. Each food is reported with a reactivity level (mild, moderate, or severe) so your provider can prioritize which eliminations are most likely to make a clinical difference versus which are low-level sensitizations that may not require immediate action.
Dairy & Milks: Cow milk, goat milk, sheep milk, casein, whey, and more
Meats & Poultry: Beef, chicken, turkey, pork, lamb, duck, venison, and more
Seafood & Fish: Salmon, tuna, cod, shrimp, crab, lobster, scallops, and 15+ additional species
Eggs: Egg white, egg yolk
Grains & Cereals: Wheat, gluten, barley, oats, corn, rice, quinoa, buckwheat, spelt, millet, rye, amaranth, and more
Nuts & Seeds: Peanut, almond, cashew, walnut, pecan, hazelnut, pistachio, sesame, sunflower, flax, chia, hemp, and more
Legumes: Soy, chickpea, lentils, kidney bean, black bean, pea, and more
Fruits: Apple, banana, blueberry, strawberry, grape, orange, lemon, mango, pineapple, avocado, coconut, and 20+ more
Vegetables: Broccoli, spinach, kale, carrot, celery, garlic, onion, potato, sweet potato, tomato, bell pepper, and 20+ more
Spices & Seasonings: Ginger, turmeric, cinnamon, black pepper, mustard, oregano, basil, vanilla, and more
Other: Coffee, cocoa/chocolate, tea, baker's yeast, brewer's yeast, honey, cane sugar, and additional items
We want to be straightforward about what IgG food sensitivity testing is and what it is not, because the wellness industry often blurs these lines and your decision should be based on accurate information.
What IgG testing measures: IgG (immunoglobulin G) is the most abundant antibody class in your bloodstream. When your immune system encounters food proteins, it can produce IgG antibodies against them. Elevated IgG levels to specific foods indicate that your immune system has mounted a response to those food antigens. In clinical practice, IgG food sensitivity testing is used as a tool to guide elimination diets for patients with chronic symptoms that may be food-related.
The clinical debate: Some immunologists argue that IgG production to foods is a normal part of immune exposure and does not necessarily indicate clinical intolerance. Major allergy organizations, including the American Academy of Allergy, Asthma and Immunology, do not endorse IgG testing as a standalone diagnostic for food allergy. This is a legitimate scientific debate, and we do not dismiss it.
The functional medicine perspective: In practice, many functional medicine and integrative practitioners have found that IgG-guided elimination diets produce meaningful symptom improvement in patients with chronic GI complaints, fatigue, skin conditions, and headaches. The working theory is that elevated IgG to specific foods reflects a loss of oral tolerance, often connected to intestinal permeability ("leaky gut"), dysbiosis, or chronic gut inflammation. When food proteins cross a compromised intestinal barrier, the immune system produces IgG antibodies against them. Removing those foods reduces the immune burden and allows the gut to heal.
Our position at Better Med Spa: We offer the Complete Food Sensitivity Panel as a clinical tool for elimination diet guidance, not as a diagnostic allergy test. It is most useful when interpreted by a provider who understands the difference between IgG sensitivity and IgE allergy, and who uses the results to build a structured elimination and reintroduction protocol rather than handing you a list of foods to avoid forever. That is exactly how we use it.
Results from the foodANALYZER platform are available within 24 hours of lab receipt, making this one of the fastest food sensitivity panels on the market. Your provider reviews the full 286-food report, identifies which reactive foods are at moderate-to-severe levels, and schedules a review consultation (in-person or telehealth) to build your elimination plan.
The review is not a blanket instruction to avoid everything that shows a reaction. Many foods will show mild IgG reactivity that may not be clinically significant. Your provider prioritizes the moderate and severe reactions, considers your symptom pattern and dietary habits, and builds a phased elimination protocol: typically 4 to 6 weeks of removing the highest-reactivity foods, followed by systematic reintroduction one food at a time while monitoring symptoms. The goal is not permanent restriction. It is identifying which foods are driving your symptoms now, removing them long enough for your immune system to calm down, and then reintroducing them strategically to determine which ones you can tolerate and which ones need to stay out of your rotation.
For patients also working with Better Med Spa on gut health protocols, the Complete Food Sensitivity Panel connects directly to treatments like Calm Within (KPV) for gut inflammation, VIP for GI motility and immune modulation, and our blood diagnostic panels for tracking inflammatory markers like hs-CRP as you eliminate reactive foods and monitor improvement.
Find out which foods are quietly working against you.
Book the Complete Food Sensitivity Panel at Better Med Spa in Lincoln Park. 286 foods. 24-hour results. A provider-guided elimination plan, not just a list.
286-food IgG sensitivity test with 24-hour results and nano-bead accuracy. The elimination diet tool for patients whose symptoms won't quit. $500 at Better Med Spa.
You have been bloated after meals for months. You wake up tired even after 8 hours of sleep. Your skin breaks out in patterns you cannot connect to anything obvious. You get headaches 2 or 3 times a week. You have tried cutting gluten, then dairy, then sugar. Some things helped a little. Nothing solved it. The problem is that delayed food reactions take 24 to 72 hours to show symptoms, which makes it nearly impossible to connect cause and effect through observation alone. You ate 15 different foods yesterday. One of them triggered your headache today. Good luck figuring out which one.
The Complete Food Sensitivity Panel at Better Med Spa in Lincoln Park, Chicago, takes the guesswork out of that equation. It tests IgG antibodies against 286 food antigens from a single blood draw, with results in 24 hours. Your provider uses the data to build a structured elimination plan around your specific reactive foods so you stop guessing and start making targeted dietary changes based on your actual immune response.
When your digestive system encounters food proteins, your immune system evaluates them. In a healthy gut with intact intestinal barrier function, most food proteins are tolerated without immune activation. But when the intestinal barrier is compromised (by stress, chronic inflammation, dysbiosis, medication use, or other factors), partially digested food proteins can cross into the bloodstream where the immune system encounters them as foreign. The immune system responds by producing IgG antibodies against those specific food proteins.
Unlike IgE-mediated allergies, which produce immediate reactions (hives, swelling, anaphylaxis) within minutes, IgG-mediated reactions are delayed. Symptoms can appear 24 to 72 hours after eating the reactive food, and they tend to be chronic and systemic rather than acute and localized. Common IgG-associated symptoms include persistent bloating and gas, irregular bowel patterns (alternating constipation and diarrhea), fatigue that does not resolve with sleep, brain fog and difficulty concentrating, recurring headaches or migraines, skin issues (eczema, acne, rashes), joint discomfort, and mood instability.
The delay between consumption and symptoms is precisely why IgG testing is clinically useful. You cannot connect a headache on Wednesday to the eggs you ate on Monday through observation alone. The test makes that connection for you.
The Complete Food Sensitivity Panel uses Access Medical Labs' foodANALYZER platform, which employs multiplex ELISA with nano-bead technology. This is the same CRD-blocking (cross-reactive determinant blocking) technology used in our Full Spectrum Allergy Panel. Standard IgG food sensitivity tests are susceptible to cross-reactive determinants, carbohydrate structures on plant-derived food proteins that can bind IgG antibodies nonspecifically and produce false positive results. The nano-bead technology blocks these CRDs during the assay, meaning the IgG binding measured in your results reflects your actual immune response to each specific food rather than noise from carbohydrate cross-reactivity.
The practical impact: fewer false positives, a shorter elimination list, and a provider review that focuses on your genuine reactive foods rather than artifacts of imprecise testing. This matters because every false positive is a food you unnecessarily avoid, which makes your elimination diet more restrictive and harder to sustain.
The other differentiator is speed. Most IgG food sensitivity panels return results in 1 to 3 weeks. The foodANALYZER platform delivers results in 24 hours after the lab receives your sample. For a patient who wants to start their elimination protocol this week rather than next month, that turnaround changes the timeline meaningfully.
Patients with chronic GI symptoms. Persistent bloating, gas, irregular bowel patterns, abdominal discomfort after meals, or a general sense that food is not sitting well. If your GI symptoms have not responded to probiotics, fiber, or standard dietary adjustments, undiagnosed food sensitivities may be driving the inflammation that keeps your gut reactive. Identifying and eliminating the specific foods involved often produces improvement that generalized dietary changes cannot.
Patients with unexplained fatigue or brain fog. If you are sleeping adequately, your bloodwork looks reasonable, and you still cannot think clearly or sustain energy through the day, your diet may be the missing variable. IgG-reactive foods create a chronic low-grade immune activation that draws metabolic resources away from energy production and cognitive function. Patients at Better Med Spa who are also running a Total Wellness Intelligence Panel or Elite Performance Panel alongside this test get the most complete picture: blood markers plus dietary triggers.
Patients with recurring skin issues. Eczema, persistent acne, unexplained rashes, or skin inflammation that does not respond to topical treatments. The skin is the body's largest organ of elimination, and it often reflects internal immune activity. IgG food reactions can drive skin inflammation from the inside that no cream or laser will resolve.
Patients starting a gut health or peptide protocol. If you are considering Calm Within (KPV), VIP, or BPC-157 for gut healing, knowing which foods are driving your gut inflammation before you start a peptide protocol makes the intervention more effective. You are not asking the peptide to calm inflammation while simultaneously re-triggering it three times a day at mealtime.
Patients who have tried elimination diets without testing. Random elimination diets are frustrating, unsustainable, and often inaccurate because they rely on symptom observation across a 72-hour delay window. The Complete Food Sensitivity Panel replaces guesswork with data. Some patients discover that the foods they eliminated were not the problem, and that the actual culprits were foods they never suspected.
Weight loss patients who have plateaued. Chronic IgG food reactions create systemic inflammation that can stall weight loss independently of caloric intake. For patients in our medical weight loss program who have stopped losing despite good compliance, identifying and removing reactive foods can break the plateau by reducing the inflammatory load that is working against their metabolic progress.
Foods tested: 286 antigens across all major dietary categories
Antibody class: IgG (delayed food sensitivity)
Technology: Multiplex ELISA with nano-bead CRD blocking (Access Medical Labs foodANALYZER)
Sample required: 1 mL serum (standard blood draw)
Fasting required: No
Turnaround: 24 hours after lab receipt
Includes: Blood draw at 2117 N Halsted St (or mobile draw order), provider review with elimination diet guidance
Lab certifications: CLIA Certified, CAP Accredited, ISO 15189, COLA Accredited
Pricing is all-inclusive. No separate draw fee. No separate consultation fee. The $500 covers the full 286-food IgG panel, the blood draw, and a provider review where your results are interpreted and translated into a structured elimination and reintroduction plan.
Better Med Spa offers both IgG and IgE food testing. They measure different things and serve different clinical purposes. Here is how to determine which one is right for you.
What it measures: Delayed immune reactions (IgG antibodies) to 286 foods
Symptom pattern: Chronic symptoms that appear hours to days after eating: bloating, fatigue, brain fog, headaches, skin issues, GI distress
Clinical use: Guides elimination and rotation diets to reduce chronic symptom burden
Best for: Patients with persistent, hard-to-pinpoint food-related symptoms who need a data-driven elimination strategy
Turnaround: 24 hours
What it measures: True allergic reactions (IgE antibodies) to 285 environmental and food allergens
Symptom pattern: Immediate reactions within minutes to hours: hives, swelling, respiratory symptoms, anaphylaxis, eczema flares
Clinical use: Identifies true immune-mediated allergies for avoidance and potential immunotherapy referral
Best for: Patients with acute allergic symptoms, suspected food or environmental allergies, or history of anaphylaxis
Turnaround: ~3 business days
If your symptoms are immediate (within minutes of eating), the Full Spectrum Allergy Panel (IgE) is the right test. If your symptoms are delayed and chronic (showing up hours to days later and lingering), the Complete Food Sensitivity Panel (IgG) is the right test. If you are unsure, your provider can help you determine which test or combination of tests fits your situation during a consultation. Some patients run both for a complete picture of their immune relationship with food.
Strongly recommended. IgG food sensitivities are often connected to intestinal permeability and gut inflammation. Running the Complete Food Sensitivity Panel before or alongside a gut-focused peptide protocol (KPV, VIP, BPC-157) means you can remove the dietary triggers that are driving gut inflammation while simultaneously supporting gut healing through peptide therapy. Addressing both simultaneously tends to produce faster and more durable results than either approach alone.
$500, all-inclusive. This covers the blood draw, all 286 food IgG tests processed through Access Medical Labs, and a provider review with elimination diet guidance. No separate fees.
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