new to the gluten free journey?
new to the gluten free journey?
$950.00
Kits may be shipped to clients in NY, NJ, and RI. Due to state regulations, specimen collections cannot be performed within these states. All blood draws must be completed out of state prior to returning samples to the laboratory.
We are able to ship this test kit to clients in Canada; however, the specimen collection and return shipping must meet strict timing requirements. The laboratory requires time-sensitive materials to be returned within an overnight or express delivery window. Because international courier timelines cannot be guaranteed, clients outside the United States will need to arrange and pay for their own expedited return shipping to the laboratory.
Please ensure that your chosen courier can meet the required delivery timeframe before collecting your sample.
This advanced panel evaluates delayed immune reactivity to 221 gluten-free foods by measuring three key antibody types: IgG, IgG4, and IgA.
IgG reflects systemic delayed inflammation to foods
IgG4 reflects repeated or long-term exposure patterns and helps distinguish irritation from true inflammatory responses
IgA reflects mucosal (gut-level) immune activity and highlights foods that may be impacting intestinal health
By assessing all three antibody types together, this panel provides a more complete and nuanced picture of how your body responds to foods compared to standard IgG-only tests. Only foods that show a measurable immune response appear on your personalized report.
Are you gluten free and still feel like something is keeping you from feeling your best?
Even when you are committed to a TRUE gluten-free lifestyle, certain foods can continue to provoke delayed immune reactions. These hidden sensitivities may overburden your immune system and contribute to ongoing symptoms.
Delayed immune responses to foods can play a role in:
Chronic inflammation
Digestive issues or leaky gut
Skin problems
Migraine headaches
Fatigue or brain fog
Joint pain
Oral or sinus symptoms
Autoimmune flare-ups
Identifying and temporarily removing reactive foods can help reduce inflammation, support gut healing, and improve overall wellbeing.
What’s Included with Your Food Sensitivity Test
No fasting required
Free shipping directly to your home
All materials needed for a standard serum blood draw (collection tubes, requisition, packaging)
Pre-labeled return mailer for U.S. customers (Canada clients must arrange their own express return shipping)
Instructions for you and your phlebotomist
Digital and printable results, typically available within three weeks
Before ordering, take a moment to review the updated blood draw and mailing instructions. This test does not require fasting, and collection is done with a simple serum draw that any phlebotomist can perform. Reviewing the process helps ensure a smooth experience from start to finish.
Once your kit arrives, schedule a standard serum blood draw with AnyLabTestNow, ArcPoint Labs, or a mobile phlebotomist. This test cannot be collected at LabCorp, Quest, or through medical offices. Because the serum tubes are time sensitive, be prepared to return your sample right away using the included overnight label (U.S. clients) or your own express courier (Canadian clients).
Digital results are emailed within about three weeks, showing your IgG, IgG4, and IgA reactivity levels for each food.
Gluten Free Society does not accept insurance. In some cases, your lab test and payment may be eligible for reimbursement depending on your specific insurance policy. Please verify this directly with your insurance provider.
Outside of an itemized receipt, Gluten Free Society does not provide CPT codes or additional documentation that insurance companies sometimes request.
No. This test measures three different antibody pathways — IgG, IgG4, and IgA — which provides a more complete picture than standard IgG-only tests.
IgG shows delayed systemic inflammatory responses
IgG4 reflects repeated exposure and helps distinguish irritation from true inflammatory reactivity
IgA reflects mucosal (gut-level) immune responses
Testing all three helps reduce false positives and provides a more accurate interpretation of how your immune system responds to foods.
Food reactions fall into two broad categories:
Acute allergies, which occur immediately
Delayed hypersensitivities, which develop hours to days after exposure
Delayed reactions are easy to overlook because the symptoms are not immediate. These reactions can contribute to:
Chronic inflammation
Gut irritation and leaky gut
Skin issues
Migraines or headaches
Fatigue or brain fog
Joint pain
Autoimmune flare-ups
Identifying these delayed immune responses can help reveal hidden triggers that continue causing symptoms even when following a TRUE gluten-free diet.
Kits may be shipped to all 50 states; however:
Specimen collection cannot occur in New York, New Jersey, or Rhode Island due to state regulations.
Clients in these states must complete their blood draw outside state lines before returning the sample.
We can only ship kits to Canada.
Because serum samples are time sensitive, Canadian clients must arrange and pay for their own express return shipping to ensure timely delivery to the laboratory.
Please confirm return courier timelines before collecting your sample.
No fasting is required for this test.
There are no special dietary restrictions or medication holds needed for this collection. This is a standard serum blood draw.
This test requires a serum blood draw, and the kit includes all materials needed for the phlebotomist.
This collection cannot be performed at LabCorp, Quest Diagnostics, or most medical offices.
These locations are not contracted to draw or process this type of test kit.
We recommend using one of the following:
Find a location: https://www.anylabtestnow.com/locations/
Find a location: https://www.arcpointlabs.com/locations/
This is often the most convenient option. Many clients choose mobile phlebotomists who come to their home or office.
Important:
Avoid Friday–Sunday blood draws and avoid appointments after 12:30 p.m. These times do not guarantee a same-day courier pickup.
Not necessarily.
Most food sensitivities are acquired, and once the underlying cause is addressed, the sensitivity often resolves. A smaller percentage of sensitivities may be fixed and require long-term avoidance.
In general:
About 80–90% of sensitivities improve with gut repair and immune support
About 10–20% may be long-term or permanent
We recommend avoiding moderate and high reactivity foods for at least six months before attempting reintroduction.
Terry G. –
Just got my blood work today! Started having gut issues 5 years among other things. So glad I found Dr. Osbourn’s website. Can’t wait see my results.
Deena H. –
Everything was shipped promptly with easy to read detailed instructions. It took about 3 weeks to get the results and I was surprised with the results. So glad I had the test because I was eating on a daily basis foods I had sensitivities to. So glad I found Dr Osborne!
. –
Appreciate the availability of the test and the results were very helpful.
Kathy B. –
I kept procrastinating getting this test because of the cost even when it was on sale but wish I would have done it sooner. I already had a hunch that casein (dairy food group) was an issue and wasn’t willing to give up all the food in this group on a hunch but now I know for sure. Some of the foods that were listed as avoiding were surprising.. Some of my favorite spices have paprika in it and the test showed high sensitivity to it which I would have never guessed. Moderate sensitivity to cantaloupe, asparagus, and psyllium. Some of my favorite grain free Siete chips have psyllium in them so that was a bit disappointing. The test showed a total of 7 foods for me to avoid for 3-6 months. The hard part with the test was finding a place to do the blood draw because I don’t have a primary doctor since moving, but I found a place that does DOT physicals for a $25 blood draw. It took about 3 weeks to get my results. This test was definitely worth getting!
Marie P. –
Glad I did this test be yI found out I’m sensitive to beef which is exactly what I’ve increased in my diet thinking I was doing myself a favor. I also found out some foods I was avoiding I am good to go with. Happy I took this test.
Jennifer F. –
This test was invaluable to me. I have ZERO acute food alllergies, so the food elimination diet I did for a full year was feuitless. This test however showed me 11 foods (many I was eating daily) that I was reacting to UP TO 3 WEEKS AFTER I ATE THEM! That’s just wild and there is no other way you’d ever figure this out. I mean, you’re never going to connect a headache or runny nose today to something you ate 2 or 3 weeks ago. How could you? One thing i was reacting to was coffee. Now, i LOVE coffee, but since drinking it was causing inflammation, it was making me tired. Which made me drink more coffee… until i took this test, cut out coffee, and regained my energy levels! Imagine that…