Food Allergy and Sensitivity 88 Test (FAST 88 Foods Test: IgE, IgG4, IgG)

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The FAST 88 Foods Test provides a detailed analysis of how your immune system reacts to 88 commonly consumed foods. By measuring three types of antibodies—IgE, IgG4, and IgG—the test identifies food allergies and sensitivities that may contribute to symptoms like digestive discomfort, skin issues, or other inflammatory responses. Understanding your body’s unique reactions can help you create a diet that aligns with your health needs. You can order a Food Allergy and Sensitivity Test or FAST 88 Foods Test IgE IgG4 IgG online without a prescription.

Test Description

The 88 Food Allergy and Sensitivity Test or FAST 88 Foods Test IgE IgG4 IgG test evaluates immune responses to 88 common foods by measuring three specific antibody types—IgE, IgG, and IgG4—produced by the immune system. These markers help identify how the body reacts to different foods and provide important insights for managing diet and health.

IgE is linked to immediate allergic reactions that can cause symptoms like itching, swelling, or breathing problems soon after eating a food. Measuring IgE helps identify true allergies that may require avoiding certain foods.

IgG reflects delayed immune responses, which means symptoms like digestive discomfort or headaches might not show up until hours or even days after eating. Testing IgG helps detect foods that could be contributing to ongoing issues.

IgG4 is related to how the body adapts to regular exposure to certain foods. It can help distinguish between harmless tolerance and sensitivities that may still cause problems.

This test provides detailed information about your immune response to specific foods, helping you understand which ones may be better to include, limit, or avoid in your diet.

Markers

Almond: A nut that can cause symptoms like an itchy mouth, upset stomach, or even more serious allergic reactions in some people.
Apple: A common fruit that may lead to mild mouth or throat irritation, especially for those with seasonal allergies.
Asparagus: A vegetable that might occasionally cause digestive discomfort or throat irritation in some people.
Aspergillus flavus: A type of mold that can trigger sneezing, coughing, or other respiratory symptoms if you’re sensitive to mold.
Aspergillus fumigatus: Another mold that’s known to affect breathing or cause allergy-like symptoms in people who are sensitive to it.
Aspergillus nidulans: A less common mold that can cause respiratory or sinus discomfort if you’re prone to mold allergies.
Aspergillus niger: A mold that might bother people with mold sensitivities, leading to symptoms like coughing or skin irritation.
Avocado: A creamy fruit that can cause itching or swelling in the mouth, especially for people allergic to latex.
Banana: A soft fruit that might trigger mild reactions like an itchy mouth, often linked to latex allergies.
Barley: A grain containing gluten, which can upset the stomach or cause other symptoms for people with gluten intolerance or celiac disease.
Beef: A protein source that rarely causes allergies but might lead to skin rashes or stomach upset in some cases.
Black Pepper: A common spice that can cause a mild reaction, such as sneezing or slight stomach discomfort, in sensitive people.
Black Tea: A warm drink that occasionally causes headaches or stomach upset for people sensitive to caffeine.
Blueberry: A small, sweet fruit that may cause mild skin or digestive reactions in rare cases.
Brazil Nut: A tree nut that can cause severe allergic reactions, including swelling or difficulty breathing, for those with nut allergies.
Broccoli: A healthy vegetable that sometimes causes bloating or mild discomfort in people with sensitive stomachs.
Buckwheat: A gluten-free seed that can cause allergic reactions, like skin irritation or trouble breathing, in some people.
Cabbage: A leafy vegetable that rarely causes reactions but might lead to mild bloating for some.
Candida albicans: A naturally occurring yeast in the body that, when overgrown, might lead to digestive discomfort or fatigue.
Cantaloupe: A juicy fruit that can cause mild itching or swelling in the mouth, especially in people with pollen allergies.
Carrot: A crunchy vegetable that might cause an itchy mouth or throat in people with pollen allergies.
Casein: A protein in milk that can trigger digestive problems or skin rashes for those with dairy sensitivities.
Cashew: A nut that can cause severe allergic reactions, such as swelling or difficulty breathing, in people with nut allergies.
Cauliflower: A mild vegetable that rarely causes reactions but might lead to bloating for some.
Celery: A crunchy vegetable that can cause serious allergic reactions in rare cases, especially when eaten raw.
Cherry: A sweet fruit that might cause mild mouth irritation or itching in people with pollen allergies.
Chicken: A lean protein that rarely causes allergies but might cause mild reactions in sensitive people.
Chicken Egg White: A common source of egg allergies, often causing rashes, stomach upset, or breathing issues.
Chicken Egg Yolk: The less common part of eggs to cause allergies, but still a potential trigger for some.
Cinnamon: A fragrant spice that might lead to mild skin irritation or stomach upset in sensitive people.
Cocoa Bean: The main ingredient in chocolate that could cause mild rashes or digestive discomfort for some.
Coconut: A versatile fruit that might cause mild skin or stomach issues, though severe reactions are rare.
Codfish: A type of fish that can cause severe allergic reactions, including hives or breathing problems, in people with seafood allergies.
Coffee: A popular drink that might cause headaches, jitteriness, or upset stomachs in some people.
Cottonseed: A plant seed that can cause mild reactions, though sensitivities are uncommon.
Cow Milk: A common allergen that can cause digestive problems, skin issues, or breathing symptoms for some.
Crab: A type of shellfish that can trigger severe allergic reactions like swelling or trouble breathing.
Cranberry: A tart fruit that rarely causes reactions but might lead to mild stomach upset in sensitive people.
Cucumber: A refreshing vegetable that might cause mild oral itching in rare cases.
English Walnut: A tree nut that can cause severe allergic reactions, including swelling or difficulty breathing, in people with nut allergies.
Flaxseed: A small seed that might cause skin irritation or digestive issues for some.
Flounder: A fish that might trigger allergic reactions in people with seafood sensitivities, causing skin or breathing symptoms.
Garlic: A pungent seasoning that might lead to mild digestive upset or skin irritation in sensitive people.
Ginger: A warming spice that can rarely cause mild irritation or stomach discomfort.
Gluten: A protein found in wheat and related grains that can cause digestive problems or immune responses in people with celiac disease or gluten intolerance.
Goat Milk: A dairy alternative that might cause reactions similar to cow milk in some people.
Grapefruit: A tart citrus fruit that can cause mild mouth irritation or stomach upset in rare cases.
Green Olive: A savory fruit that might cause mild reactions, like stomach discomfort, in sensitive people.
Green Pea: A legume that might cause mild allergic reactions, including itching or stomach upset, in some cases.
Green Pepper: A crunchy vegetable that might cause mild itching in the mouth for people with sensitivities.
Halibut: A type of fish that can cause reactions like itchy skin or trouble breathing for those with seafood allergies.
Hazelnut: A nut that can trigger serious allergic reactions, such as swelling, rashes, or difficulty breathing, in people with nut allergies.
Hops: A plant used in beer-making that might cause mild reactions like sneezing or skin irritation in sensitive people.
Kidney Bean: A legume that could cause stomach discomfort or mild allergic reactions, especially if eaten undercooked.
Lamb: A meat that rarely causes allergies but might lead to mild stomach upset or skin irritation in some people.
Lemon: A citrus fruit that can sometimes irritate the mouth or skin, especially in people with sensitivities.
Lettuce: A leafy vegetable that is usually well-tolerated but might cause mild stomach upset in rare cases.
Lobster: A shellfish that is a common allergen, causing reactions like hives, swelling, or breathing problems in some people.
Mackerel: A fish that can cause allergic reactions in people with seafood sensitivities, such as skin irritation or breathing issues.
Malt: A grain product, often from barley, that can upset the stomach for people who are sensitive to gluten.
Mushroom: A fungus that occasionally causes mild reactions like skin irritation or an upset stomach in sensitive people.
Mustard Seed: A common spice that can trigger allergies, causing symptoms like sneezing, rashes, or mild breathing issues.
Navy Bean: A legume that might lead to mild digestive discomfort or allergic reactions in some people.
Nutmeg: A spice that is rarely an allergen but can sometimes cause mild skin or breathing irritation.
Oats: A grain that can cause stomach problems in people who are sensitive to gluten or eat cross-contaminated oats.
Onion: A flavorful vegetable that might irritate the stomach or cause mouth tingling in some people.
Orange: A citrus fruit that can sometimes cause itchy lips or mild skin irritation in people with citrus sensitivities.
Oyster: A type of shellfish that can cause serious allergic reactions like swelling, hives, or trouble breathing.
Peach: A juicy fruit that might cause mild itching or irritation in the mouth for those with pollen allergies.
Peanut: A common allergen that can lead to severe reactions, including swelling or difficulty breathing, even in small amounts.
Pear: A fruit that is generally mild but can occasionally cause mouth irritation or digestive discomfort.
Pecan: A tree nut that can trigger strong allergic reactions, including swelling, skin rashes, or trouble breathing.
Pineapple: A tropical fruit that might cause tingling in the mouth or a mild stomach upset for some people.
Pistachio Nut: A nut that can cause severe allergic reactions, such as hives or breathing difficulties, in people with nut allergies.
Plum: A fruit that might cause mild reactions, like mouth itching or upset stomach, in sensitive people.
Pork: A type of meat that rarely causes allergies but can lead to mild reactions like digestive discomfort in some cases.
Raspberry: A berry that might occasionally cause mild symptoms like an itchy mouth or stomach upset.
Rice: A grain that is usually well-tolerated but might cause mild reactions in rare cases.
Rye: A grain that contains gluten, which can cause digestive issues in people with gluten sensitivities or celiac disease.
Salmon: A fish that can cause allergic reactions, like rashes or breathing problems, in people with seafood allergies.
Scallops: A shellfish that might cause severe allergic reactions like swelling or difficulty breathing in some people.
Sesame: A seed that can trigger allergic reactions, including skin rashes, digestive issues, or trouble breathing.
Shrimp: A shellfish that often causes severe allergies, with symptoms like hives, swelling, or difficulty breathing.
Soybean: A legume that can cause allergies or sensitivities, leading to skin irritation, stomach upset, or breathing problems.
Spinach: A leafy green that can occasionally cause mild stomach upset or an itchy mouth in sensitive people.
Strawberry: A sweet berry that might cause skin irritation or itching in the mouth for some people.
String Bean: A legume that rarely causes reactions but might lead to mild digestive discomfort for some.
Sweet Corn: A starchy vegetable that is usually well-tolerated but might cause mild symptoms in sensitive people.
Sweet Potato: A root vegetable that is generally easy to digest but might cause mild bloating for some people.
Tomato: A fruit that can cause mouth irritation or stomach discomfort, especially in people sensitive to nightshades.
Tuna: A fish that might trigger allergic reactions, like skin irritation or trouble breathing, in people with seafood allergies.
Turkey: A lean meat that is generally well-tolerated but might cause mild reactions in sensitive people.
Vanilla: A spice extract that can rarely cause mild skin irritation or upset stomach in some people.
Watermelon: A juicy fruit that might cause mild itching in the mouth or stomach upset for those with sensitivities.
Wheat: A grain that contains gluten and can cause digestive or immune reactions in people with celiac disease or gluten sensitivity.
White Grape: A fruit that is generally well-tolerated but might cause mild reactions like upset stomach in rare cases.
White Potato: A starchy vegetable that is easy to digest for most but might cause mild discomfort in some people.
Yeast: A fungus used in baking and brewing that can cause digestive or skin reactions in sensitive people.
Yellow Squash: A mild vegetable that is usually well-tolerated but might cause slight stomach upset in rare cases.
Zucchini: A vegetable that is generally easy to digest but might cause mild mouth or stomach irritation in sensitive people.

Who Should Consider This Test?

People with chronic digestive issues: Persistent bloating, diarrhea, or stomach discomfort without a clear cause may indicate food sensitivities or allergies. A FAST 88 Foods Test IgE IgG4 IgG test can help identify specific foods that might be contributing to these symptoms.
People with unexplained skin problems: Skin conditions like eczema, hives, or recurring rashes can sometimes be linked to food triggers. Identifying reactive foods may help reduce inflammation and improve skin health.
People with frequent headaches or migraines: Chronic headaches or migraines can be caused by delayed food sensitivities, making triggers hard to pinpoint. Testing can uncover food-related culprits that might help reduce headache frequency.
People with suspected food allergies: Immediate allergic reactions, such as swelling or trouble breathing after eating certain foods, suggest a need to confirm specific allergies. This test can identify foods causing IgE-mediated allergic responses.
People with joint or muscle pain: Food sensitivities can lead to systemic inflammation, which may aggravate joint or muscle pain. Identifying reactive foods could help manage these symptoms and improve overall comfort.
People with fatigue or low energy: Chronic tiredness may result from underlying inflammation caused by food sensitivities. Identifying and avoiding triggering foods could restore energy levels.
People with a family history of food allergies or sensitivities: A genetic predisposition may increase the likelihood of experiencing similar issues. Testing can help confirm or rule out food reactions and guide dietary choices.
Parents of children with suspected food reactions: Symptoms like rashes, stomach discomfort, or behavioral changes after meals may indicate food sensitivities or allergies in children. Testing can help identify problem foods and guide dietary adjustments.
People with multiple unexplained symptoms: A combination of issues, such as digestive discomfort, skin problems, and fatigue, can be hard to diagnose without identifying food-related triggers. The FAST 88 Foods Test IgE IgG4 IgG test provides a comprehensive way to explore potential causes.
People considering dietary changes: Those starting an elimination diet may want to test for sensitivities to guide their choices. Knowing specific food triggers can make dietary adjustments more effective and targeted.
People with recurring respiratory symptoms: Frequent congestion, sinus issues, or asthma-like symptoms may sometimes be linked to food allergies or sensitivities. Testing can help identify foods that may be contributing to respiratory inflammation.
People with autoimmune conditions: Conditions like Hashimoto’s thyroiditis, rheumatoid arthritis, or lupus can be worsened by food sensitivities. Identifying and avoiding triggering foods might help reduce inflammation and improve symptoms.
People recovering from chronic illness: Those recovering from illnesses affecting the gut or immune system may benefit from understanding their body’s reaction to specific foods. Testing can guide dietary choices to support recovery and minimize discomfort.
People with weight management challenges: Persistent weight gain or difficulty losing weight might be influenced by food sensitivities causing inflammation or hormonal disruptions. Testing could provide insight into which foods to avoid for better weight control.
People with mood or behavioral changes: Food sensitivities may contribute to mood swings, anxiety, or irritability, particularly in children or those with underlying conditions. Identifying problematic foods might improve emotional well-being.
Athletes or highly active people: Optimizing nutrition is critical for performance and recovery, and undetected food sensitivities might hinder progress. Testing can help refine dietary choices for better energy and recovery.
People with frequent infections or weak immunity: Chronic food sensitivities can strain the immune system, making people more susceptible to illnesses. Testing can help reduce immune stress by identifying foods that trigger inflammatory responses.
People undergoing dietary transitions: Those moving to specialized diets, such as vegan, paleo, or gluten-free, may benefit from testing to confirm compatibility with certain foods. This can help tailor the diet to individual needs and avoid unintended triggers.
People with suspected mold or yeast sensitivities: Reactions to fungi like Candida or Aspergillus may exacerbate health issues. Testing for sensitivity to these markers can provide clarity and guide treatment strategies.
People with persistent bloating or gas: These common symptoms might be linked to undetected food sensitivities. Identifying problematic foods can improve gut health and overall comfort.
People with chronic sinus issues: Long-standing nasal congestion, sinus pain, or postnasal drip may be related to food sensitivities or allergies. Testing can identify foods that may be contributing to inflammation in the sinus passages.
People with difficulty focusing or brain fog: Cognitive symptoms like trouble concentrating, forgetfulness, or mental fatigue could be tied to food sensitivities. Testing can help identify potential dietary triggers affecting mental clarity.
People with hormonal imbalances: Sensitivities to certain foods might influence hormonal health, potentially worsening symptoms of conditions like PCOS, endometriosis, or menopause. Testing can guide dietary adjustments to better support hormonal balance.
People with chronic fatigue syndrome or fibromyalgia: Food sensitivities might contribute to the inflammatory processes behind these conditions. Identifying and avoiding trigger foods could help alleviate symptoms.
People with seasonal allergies: Cross-reactivity between certain foods and environmental allergens, like pollen, may worsen symptoms. Testing can help pinpoint specific food triggers related to seasonal allergies.
People with recurring ear infections: In children or adults, food sensitivities may contribute to fluid buildup or inflammation in the ears. Testing could provide insights into whether dietary changes might help.
Pregnant or breastfeeding people with dietary concerns: Understanding food sensitivities can help guide healthier eating choices for both parent and baby, particularly if there’s a family history of allergies.
People with digestive disorders: Conditions like IBS, Crohn’s disease, or ulcerative colitis may be aggravated by food sensitivities. Testing can help identify foods that could worsen symptoms.
People managing chronic inflammation: Undetected food sensitivities can drive systemic inflammation, impacting conditions like cardiovascular disease, arthritis, or metabolic syndrome. Testing might offer a way to reduce this inflammatory load.
People with unexplained weight loss or malnutrition: Food sensitivities might limit nutrient absorption or lead to unintentional avoidance of critical foods. Identifying triggers can help in maintaining a balanced diet.
People with adverse reactions to common foods: Those who feel unwell after eating but can’t pinpoint specific triggers might benefit from testing to clarify what foods to avoid.
This test is broadly useful for anyone seeking to understand how their body responds to specific foods to optimize health and well-being.

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The information provided in this article is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Functional medical tests and nutrition-related labs should be used as tools to support health and wellness under the guidance of a qualified healthcare provider. Results from these tests should not replace professional medical advice or be interpreted without consulting a licensed practitioner familiar with your health history and needs. Always consult your doctor or dietitian before making changes to your diet, supplements, or health management plan.