Foodsafe™ IgG4 (190) - Food Sensitivity Test

FoodSafe™ IgG4 (190)(Fingerstick)

https://www.meridianvalleylab.com/services/foodsafe-igg4-combo-profile/

Best for pinpointing localized inflammation in the upper GI tract, sinuses, or other mucosal surfaces, especially when standard allergy tests are negative.

Common situations where it’s helpful:

• Suspected EoE (eosinophilic esophagitis) – trouble swallowing, food “sticking,” or reflux symptoms unrelieved by medication.

• Chronic heartburn or throat irritation – especially without visible ulcers.

• Unexplained bloating or upper-abdominal pain despite normal imaging.

• Adult-onset sinus or respiratory issues after eating certain foods (like dairy, gluten, or soy).

• Infants and children with reflux, poor feeding, or slow growth.

• Intermittent mucosal irritation – dry mouth, mild esophageal discomfort, or post-meal fullness without systemic inflammation.

Why this matters:
IgG4 helps uncover localized immune reactions that Total IgG might not highlight, guiding more precise food elimination.

Check with you

• Total IgG = a wide-angle lens for finding multiple triggers behind chronic, body-wide inflammation.

• IgG4 = a close-up lens for identifying food reactions in specific tissues or organ systems.

Your provider can help decide which test best fits your symptoms and health goals.

FoodSafe™ IgG4 (190) Features:

• Coverage: 189 foods + Candida albicans antibody screen
• Method: ELISA detection for IgG4 antibodies
• Results: Low / Moderate / High, color-coded
• User friendly, at-home bloodspot collection kit (no lab visit needed)
• Pre-paid return shipping label included

The analytes included in this test are the following:

Dairy

• Casein • Cheddar cheese • Cottage cheese • Cow’s milk • Goat’s milk • Mozzarella cheese • Parmesan cheese • Sheep milk • Whey • Yogurt

Meats

• Beef • Buffalo • Chicken • Duck egg • Duck meat • Egg white • Egg yolk • Lamb • Pork • Turkey • Venison

Fish

• Cod • Halibut • Salmon • Sardine • Sole • Tilapia • Trout • Tuna

Shellfish

• Clam • Crab • Lobster • Oyster • Shrimp

Vegetables

• Alfalfa • Artichoke • Asparagus • Bamboo shoot • Bean sprout • Beet • Black bean • Black olive • Bok choy • Broccoli • Brussels sprout • Butternut squash • Cabbage • Carrot • Cauliflower • Celery • Chili pepper • Cucumber • Eggplant • Endive • Garbanzo bean • Garlic • Green bean • Green olive • Green pepper • Jalapeño • Kale • Kelp • Kidney bean • Kohlrabi • Lentil • Lettuce • Lima bean • Mung bean • Navy bean • Okra • Onion • Pea • Pinto bean • Potato • Pumpkin • Radish • Rutabaga • Soy • Spinach • Sweet potato • Tomato • Water chestnut • Watercress • Yam • Yellow squash • Zucchini

Grains

• Amaranth • Barley • Brown rice • Buckwheat • Corn • Flaxseed • Gliadin • Gluten • Hemp • Millet • Oat • Psyllium seed • Quinoa • Rice • Safflower seed • Sorghum • Teff • Wheat • Wild rice

Nuts

• Almond • Brazil nut • Cashew • Chia seed • Coconut • Hazelnut • Macadamia • Peanut • Pecan • Pine nut • Pistachio • Pumpkin seed • Sesame seed • Sunflower seed • Walnut

Spices

• Allspice • Basil • Black pepper • Cilantro • Cinnamon • Clove • Coriander • Cumin • Dill • Ginger • Horseradish • Mustard • Nutmeg • Oregano • Parsley • Peppermint • Poppy seed • Rosemary • Sage • Spearmint • Tarragon • Thyme • Turmeric • Vanilla

Fruits

• Apple • Apricot • Avocado • Banana • Blackberry • Blueberry • Boysenberry • Cantaloupe • Cherry • Cranberry • Currants • Fig • Grapefruit • Kiwi • Lemon • Mango • Orange • Papaya • Peach • Pear • Pineapple • Plum • Pomegranate • Raspberry • Red grape • Rhubarb • Strawberry • Watermelon • White grape

Miscellaneous

• Arrowroot • Baker’s yeast • Brewer’s yeast • Cane sugar • Carob • Cocoa • Coffee • Corn sugar • Cornstarch • Honey • Hops • Maple sugar • Mushroom • Tapioca • Xanthan gum • Tea

Candida Screen

• Candida albicans

CAUTION: Do not use this product if you have a blood clotting disorder or are using prescribed blood thinning medications, unless otherwise advised by your healthcare provider. 

Medications and Precautions 
Medications such as antihistamines, methotrexate, tricyclic antidepressants, H2-receptor antagonists (e.g., ranitidine, cimetidine), proton-pump inhibitors, and over-the-counter pain and fever reducers do not interfere with the accuracy of the ELISA test method. 
 
Immune suppressive medications (e.g.: prednisone) or a weakened immune system (e.g.: due to chemotherapy) may result in the inability to mount an antibody response to varying degrees, resulting in lower values. 
 
This medication list is not inclusive. Please discuss your medications with your healthcare practitioner. Some practitioners may advise their patients to discontinue certain medications for a period of time depending on their practice and experience.