Food Sensitivity Testing | IgG Testing Explained

Many people deal with symptoms they wouldn’t immediately connect to food — bloating, headaches, joint pain, skin issues, or just feeling “off” without a clear reason. Often, these symptoms don’t show up right after eating, which makes patterns harder to spot.

That’s because food sensitivities are often delayed and cumulative, meaning reactions can build over time rather than happening immediately. This can make them easy to miss.

Food Sensitivities vs Food Allergies

Food allergies involve an IgE response and usually cause fast, noticeable reactions like hives, swelling, or trouble breathing.

Food sensitivities are different. They’re often associated with IgG responses, which can contribute to low-grade inflammation and symptoms that appear hours or even days later. IgG testing doesn’t diagnose food allergies, but it can help identify patterns that may be contributing to ongoing or unexplained symptoms.

Food Sensitivity Testing in Our Office

We offer an IgG food sensitivity test that looks at 286 foods across 13 food groups, including dairy and eggs, vegetables, meats, spices, fish and seafood, grains and seeds, nuts, legumes, fruits, coffee and tea, and even some novel foods like almond milk, chia seed, tapioca, and aloe.

This testing isn’t used to diagnose disease, but it can offer helpful insight when symptoms feel persistent or hard to trace.

How Food Sensitivities Can Show Up

Food sensitivities don’t just affect digestion. They can show up as:

• Bloating, reflux, constipation, diarrhea, or IBS

• Headaches or migraines

• Skin issues like eczema, rashes, or dark circles

• Joint or muscle pain

• Blood sugar swings or food cravings

• Anxiety, mood changes, or trouble focusing

  
  

Symptoms vary widely, and not everyone reacts to the same foods in the same way.

What Happens After Testing

Testing is just one part of the process. Once results are back, we review them with you and help create a personalized plan based on your symptoms, lifestyle, and goals.

This often includes a temporary elimination of foods that appear most inflammatory, along with support to help calm and heal the gut. The goal isn’t long-term restriction, it’s to improve gut health so foods can often be reintroduced gradually over time.

Food sensitivity testing isn’t covered by insurance, but HSA or FSA funds can often be used.

Ready to Take the Next Step?

If any of this sounds familiar, scheduling an appointment is the best way to see if food sensitivity testing makes sense for you.

Book your appointment here.