Food Sensitivity Test

This test measures your immune system's IgG antibody reactivity to up to 204 foods (link to full list). Each food item below will be rated on a scale of Class 0 (normal reactivity) to Class 3 (high reactivity). A higher than normal IgG reactivity can mean there’s a possibility that that food item may be causing your symptoms—making it an ideal candidate for your two-part elimination diet.

This test is not a food allergy test, nor can it determine lactose intolerance or celiac disease.

Everything you need to understand your results:

1. Pre-paid shipping (both ways)

2. All materials for sample collection and shipping back to the lab

3. Detailed directions and an instructional video to guide you

4. Help along the way from our customer care team

5. Digital (and printable) results

6. Watch a recorded educational session led by a healthcare professional

Gauze, alcohol pad, bandage, lancets, collection card, biohazard bag, and prepaid return shipping label.

There are three easy steps to answers:

1. Order and register your test: Once your test arrives in the mail, go to everlywell.com or your Everlywell app to register.

2. Test from home: Follow the instructions to collect your samples, then mail everything back with the prepaid label.

3. Get your results in days: Your clinician-reviewed results will be waiting in your secure account with clear explanations and personalized guidance on what to do next.

Do you ever feel like you may have certain symptoms related to foods, such as headaches, stomach pain, or diarrhea? Do you feel you may want to try eliminating possible triggers, but you are not sure where to start?

Our Food Sensitivity Test measures your body’s IgG immune response to up to 204 common foods.

A temporary elimination diet is a way to help you pinpoint foods that may be causing your symptoms. This test is not the same as an intolerance or food allergy test. Food allergies are mediated by IgE antibodies, and symptoms for food allergies typically occur within minutes to hours of exposure. These symptoms are often severe and potentially life-threatening. Food sensitivities, on the other hand, are often marked by a low and slow onset, and involve an entirely different antibody—IgG. In addition, this test does not test for lactose intolerance, IBS, or celiac disease.

Your body may have an immune response to foods you eat, which may manifest as physical symptoms. Some of our customers take the Food Sensitivity Test because they experience symptoms like:

• Bloating

• Headaches

• Indigestion

• Gastrointestinal (GI) distress

• Stomach or abdominal pain

If you are looking to add a potentially ‘problematic’ food back into your diet to see if you’re still reactive to it on your test results, it’s recommended to consume that food for about 4-6 weeks prior to testing.

The results of your Everlywell Food Sensitivity Test are intended to be used to guide a temporary elimination diet with an add-back challenge. This is a critical step in helping pinpoint which foods may be causing your unwanted symptoms.

We understand that food elimination and restriction can lead to or trigger disordered eating behavior. For this reason, it is not recommended to take the Food Sensitivity Test if you currently have or are in recovery from an eating disorder (i.e., anorexia nervosa, bulimia nervosa, and binge eating disorder).

It is also not recommended to use the results of your Food Sensitivity Test to achieve weight loss. Eating a balanced diet is important and your results are not intended to strictly limit your consumption and inhibit your ability to obtain necessary calories and nutrients from food.

Due to the specific nutritional needs of pregnant and breastfeeding women, elimination diets are not recommended. It’s best to speak with your healthcare provider for advice if you are experiencing unwanted symptoms.

Everlywell currently does not offer tests to anyone below the age of 18. Additionally, we restrict registration for anyone below the age of 18.

If a test was purchased on everlywell.com and your order hasn’t shipped, we can offer a full refund upon request. Our full returns policy can be found here.

For any other questions regarding this policy, please feel free to contact our Customer Care Team.

The laboratories that process Everlywell Food Sensitivity tests are CLIA-certified and follow a strong quality program to help ensure accurate and consistent results. This includes internal quality checks with every run, regular proficiency testing, and ongoing monthly quality reviews.

IgG antibody reactivity is based on exposure to the food or foods; therefore, individuals who have since eliminated “problematic” foods (those which they suspect may have caused symptoms) from their diet may see a lower reactivity than expected.

Your food sensitivity results will tell you your levels of IgG antibody reactivity to up to 204 common foods.

Each food will be rated on a Class scale of 0-3: Class 0 (normal reactivity) to Class 3 (high reactivity). This is a great place to start if you want to dig into your body's relationship with food.

You will also get:

• Tailored suggestions about what to do next

• Help prioritizing your temporary elimination diet

• Personalized information and education

Everlywell will provide suggestions about what to do next. While reactivity does not always equate with symptoms, it can help prioritize the foods selected for a temporary elimination diet. Once you have your IgG test results, you can try a two-part elimination diet to help you pinpoint which foods may be causing you symptoms. This can allow you to achieve the right balance of minimizing your symptoms while maintaining a lifestyle that you enjoy.

Our tests provide personalized information and education; they are not intended to diagnose any disease or condition, or to substitute for professional medical advice or treatment. You should always seek the advice of your physician or other qualified healthcare provider with any questions you have regarding your medical care.

This test is a great place to start if you suspect that one (or more!) of the foods currently in your diet may be causing you discomfort. Enjoy food sensitivity testing the way it should be; quick, easy, and from the convenience of your home.

Your body can react to a “troublesome” food in several different ways, and how your body reacts to that food depends on whether you may have a food sensitivity, food intolerance, or food allergy. It’s not uncommon for confusion to exist around the fact that allergies, intolerances, and sensitivities aren’t interchangeable. Here, we’ll explore each of these types of adverse reactions to food – starting with food sensitivity.

Food Sensitivity

A food sensitivity may result from a type of immune system response that’s very different from a food allergy. While not entirely understood, research has shown that people may identify symptom-causing foods using the results of IgG testing along with an elimination diet. IgG antibody reactions against those foods may be normal in some people, but in others, it may cause symptoms because of the inflammation the immune reaction produces from those interactions. Food sensitivity symptoms reported by our customers include headaches, bloating, stomach pain, indigestion – and more.

What’s really interesting about food sensitivities is that symptoms usually don’t appear as soon as you eat the problem food. Instead, you might have symptoms hours or days after eating that food – which can make it hard to connect specific foods to the symptoms you’re experiencing.

Fortunately, with an elimination diet and Everlywell’s Food Sensitivity Test, you can discover what foods you may be sensitive to.

Learn more:

Food Sensitivity Explained

Food Allergy vs. Food Sensitivity

Food Sensitivity Toolkit

Food Allergy

When you eat a food you’re allergic to, your immune system responds by activating the IgE antibodies in your blood. Those antibody-food interactions result in the production of a chemical called histamine. Histamine is a type of substance your immune system makes. When immune cells release histamine in your body, you might experience any number of allergy symptoms. (That’s why many over-the-counter allergy medications are known as “antihistamines” – they counteract the allergic effects of histamine.) With food allergies, symptoms usually appear almost as soon as you’ve eaten the trigger food.

An example of a food allergy is an allergy to tree nuts, one of the most common causes of food-related allergic reactions in the world. (Hazelnuts, walnuts, and macadamia nuts are all examples of tree nuts.)

If you’re allergic to a certain food, you can experience a potentially life-threatening allergic reaction whenever you eat that food. That’s because anaphylaxis can occur within minutes of consuming food allergens. Anaphylaxis can result in death because of a dramatic drop in blood pressure – or because of swelling around the person’s airways, which cuts off the body’s supply of air.

Food Intolerance

A food intolerance can occur if, for example, you don’t have enough of the right enzymes your body needs to break down a particular food. (Enzymes are special proteins in the body that dramatically speed up chemical reactions.)

An example of a food intolerance is lactose intolerance. Lactose is a type of sugar commonly found in cow’s milk. If you’re lactose intolerant, your body doesn’t produce enough lactase – the enzyme that breaks down lactose. So it’s hard for your body to digest lactose effectively, resulting in unpleasant symptoms when you drink a glass of milk or eat dairy products. Food intolerance symptoms commonly include nausea, bloating, and diarrhea.

Unlike food allergies, food intolerances don’t involve an immune system response - they all take place inside the gut before digestion occurs.

If you have a sensitivity to a particular food, you might experience one or more adverse reactions several hours or days after eating that food. Some reported symptoms from our customers include:

• Headaches

• Bloating

• Stomach or abdominal pain

• Indigestion

• Gastrointestinal distress

Related test for bloating symptom: Thyroid Test

An elimination diet can be a useful tool for uncovering the specific foods you’re sensitive to.

Basically, in an elimination diet, you temporarily remove foods from your diet that you suspect could be giving you symptoms. In other words, you stop eating those “suspect foods” for a given amount of time – often between 4-6 weeks.

Next, you add those foods back to your diet – one at a time. Each time you add a “suspect food” back to your diet, you watch for symptoms for about 2-3 days. If a food you’re adding back doesn’t result in symptoms, then you continue eating it as a normal part of your diet. But if a food does give you symptoms when you add it back to your diet, then you’ve likely found a food you’re sensitive to.

That’s why food sensitivity testing can make a real difference if you want to discover the foods you’re sensitive to. A food sensitivity test checks the reactivity levels of your IgG antibodies for many different foods. (IgG antibodies are another type of antibody that your immune system produces.)

If you have a high IgG reactivity level to a certain food, there’s a possibility that food may be involved with causing your food sensitivity symptoms.

So taking a food sensitivity test can give you a list of “suspect foods” that’s based on your body’s immune system response. You can then use this information to guide your elimination diet – and to choose what foods to eliminate at first. This helps remove a lot of the “guessing” in the elimination diet process – and can make it easier for you to pinpoint the foods behind your symptoms.

Learn more:

How To Use A Food Elimination Diet To Discover Your Food Sensitivities

A food sensitivity blood test measures your IgG reactivity levels for different kinds of food, using a small sample of blood. High IgG reactivity for a certain food indicates there’s a possibility that food may be involved with causing your symptoms.

Knowing your IgG reactivity levels for various foods can help you create a list of “suspect foods” to initially remove in an elimination diet – making it an easier, quicker process to pinpoint what's causing your symptoms of food sensitivity.

An IgG food sensitivity test uses a small sample of blood to check how your IgG antibodies react to different kinds of food. A higher IgG reactivity level for a certain food can mean that there’s a possibility that food can be giving you symptoms – making that food an ideal candidate to include in your list of “suspect foods” you initially remove in an elimination diet.

An IgG blood test for food sensitivity reveals your IgG reactivity levels for different foods. A higher level of IgG reactivity for a given food suggests that it may be causing your symptoms.

However, higher IgG reactivity levels don’t always correlate with symptom-causing foods – which is why it’s so important to use an elimination diet (guided by your IgG test results) to accurately pinpoint your specific food sensitivities.