What a Food Inflammation Test Can (and Can’t) Tell You
If you've ever felt "off" after certain meals, you've probably wondered whether a test could pinpoint the foods that don't agree with you. Food sensitivity and food inflammation tests are popular, and for good reason: they offer a structured starting point. But they're also widely misunderstood. As registered dietitians who offer the KBMO Food Inflammation Test (FIT), we want you to know exactly what it can and can't tell you before you order.
What is a food inflammation test?
The KBMO FIT test is a blood test, usually done at home with a finger-stick dried blood spot. FIT 132 looks at 132 foods, colorings, and additives, and FIT 176 looks at 176. Both panels also include KBMO's Gut Barrier Panel: zonulin, occludin, candida, and LPS. The test measures IgG (subclasses 1–4) and complement (C3d) immune-complex reactivity, plus IgA for the gut barrier markers, to each item, and your report groups foods by how strongly your sample reacted.
At RINT, the kit ships directly to you within 2–3 business days, includes everything you need, and your results are emailed to you 7–10 business days after the lab receives your sample.
What it CAN tell you
Patterns worth exploring: the report highlights foods that may be worth looking at more closely in a structured, temporary elimination and reintroduction plan.
A starting point for personalization: instead of guessing, or cutting out entire food groups at once, results can help you and your dietitian prioritize where to start.
Motivation and structure: many people find it easier to stick with a short-term plan when it's built around their own data.
What it CAN'T tell you
This is the part that matters most. A food inflammation test:
Is not a food allergy test. Food allergies involve a different immune pathway (IgE) and can cause serious reactions. If you have a known or suspected food allergy, see your physician or an allergist. Do not use FIT results to decide whether it's safe to eat a food you may be allergic to.
Does not diagnose any medical condition. It can't diagnose celiac disease, digestive disorders, or any other condition. If you have ongoing symptoms, talk with your healthcare provider.
Doesn't prove a food is causing your symptoms. A reaction in the lab doesn't automatically mean that food is the reason you feel the way you do. Some reactivity can simply reflect foods you eat often.
It's also fair to know that major allergy organizations caution against using IgG-based food tests to diagnose food allergy or intolerance. That's exactly why we treat FIT as one educational tool, never a verdict, and always interpret it alongside your history, symptoms, and eating patterns.
Food inflammation test vs. food allergy test
Food allergy testing (IgE skin-prick or blood tests, ordered by a physician or allergist) looks for immediate, potentially severe allergic reactions.
Food inflammation/sensitivity testing like FIT looks at a different type of immune response and is used to guide a personalized, short-term eating plan, not to diagnose allergy.
How to use your results wisely
Don't cut out everything at once. Removing many foods at the same time can make it hard to meet your nutrient needs and can make eating stressful.
Use a short-term, structured approach. A typical plan removes a few higher-priority foods for a set period, then reintroduces them one at a time while you track how you feel.
Protect your nutrition. A dietitian can make sure you still get enough protein, fiber, calcium, and other key nutrients while you experiment.
Keep the big picture in mind. Sleep, stress, activity, and overall eating patterns all play a role in how you feel.
Who might consider testing?
FIT may be helpful if you're curious about your body's response to specific foods, you've already tried general food-first changes, and you want a structured way to personalize your next steps. It's not a substitute for medical care. If you have significant or worsening symptoms, start with your healthcare provider.
What the process looks like
Order your kit through RINT. Our team sets it up and ships it to your door with all the supplies and instructions included.
Complete the finger stick at home, following the kit instructions, and mail your sample to the lab.
Receive your results by email about 7–10 business days after the lab receives your sample.
Review your results with a registered dietitian or your healthcare provider before making changes. Then follow a short-term, structured plan and reassess how you feel.
Ordering FIT through RINT
You can order FIT 132 ($450) or FIT 176 ($550) through RINT, available nationwide. KBMO tests are ordered through a licensed provider, so our team sets up your kit and ships it to your home. Existing RINT patients can review their results with their dietitian during an MNT (medical nutrition therapy) session and build a personalized plan from there. Please wait until you've reviewed results with a professional before making big changes or starting new supplements.
If your plan eventually includes a supplement, our dietitian-curated Supplement Protocols are available through our Fullscript dispensary, where you save 10–20%.* And if you're wondering how to judge supplement quality, read our dietitian's guide to choosing a quality supplement.
The bottom line
A food inflammation test can be a useful, personalized starting point. It is not an allergy test and not a diagnosis. Used thoughtfully, with professional guidance, it can help you make more confident food choices.
Food Inflammation Testing is an educational tool. It is not a food allergy test and does not diagnose any medical condition. *These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease. Use under your dietitian’s or healthcare provider’s guidance. This article is for educational purposes and is not a substitute for individualized medical advice.
