Qwest 4 Health | Food reactions (IgG lab test) and Candida
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Food reactions (IgG lab test) and Candida

This lab test will test you  for food reactions and intolerances

IgG & IgG + Candida

What are we testing?

Immunoglobulin s are antibodies that the body produces to fight bacteria and viruses.  Antibodies are also responsible for allergic reactions in the body.  Immunoglobulin G is the most abundant type of antibody in the body.  It is involved in delayed hypersensitivity reactions, the most common type of allergy.  IgG antibodies do not produce anaphylactic-type allergies.  Delayed hypersensitivity reactions cause symptoms that appear anywhere from several hours to several days after exposure.  This makes IgG allergies difficult to diagnose.  Blood spot testing for IgG provides a simple and practical means for practitioners to uncover potential causes of allergic reactions and allergy related disease.


Test Kit Contents

Why have IgG test done?

  • To uncover food allergies to resolve current symptoms or to prevent hidden chronic inflammation from developing into systemic disease.
  • When a person is symptomatic.  There are many symptoms of delayed hypersensitivity reactions to food.  Some of the more common symptoms include:
  • Digestive symptoms: abdominal bloating, abdominal pain, flatulence, diarrhea, constipation, heartburn, infant colic, canker sores
  • Urinary symptoms: chronic or recurring urinary tract infections, urinary frequency or urgency, bedwetting
  • Immune symptoms: frequent colds,  frequent ear infections, allergies, post-nasal drip, sinus congestion
  • Mental/emotional symptoms: anxiety, depression, hyperactivity, inability to concentrate
  • Musculoskeletal symptoms: muscle or joint pain,
  • Respiratory symptoms:  asthma, chronic or recurring cough
  • Skin symptoms: eczema, rashes, acne, hives, “allergic shiners” (aka dark circles around eyes)
  • Miscellaneous symptoms: fatigue, headaches/migraines, overweight/obesity

Who can be tested?

  •  Adults and children over the age of 2 may be tested

Special Considerations:

  • Antibodies are produced by the body after the ingestion of a food.  The half-life of an IgG antibody is about 3 weeks.  It takes 5 to 7 half-lives to completely eliminate a specific IgG antibody from the body.  So it could take up to 4 months for IgG levels to a reactive food to drop down to the non-reactive range.  However, to adequately prepare for the test patients should aim to eat a serving of each of the target foods at least twice in the 7 days prior to testing.

Optional Candida Testing:

  • The AllergGSpot includes IgG response to Candida.  Candida overgrowth has been associated with symptoms like clouded thinking, depression, diarrhea, exhaustion, bad breath, fatigue, menstrual pain, vaginal yeast infections, fungal nail symptoms and headaches.

Foods Tested by IgG Blood Spot Testing

96 General Foods Panel:



Almond Corn Pecan
Amaranth flour Crab, Dungeress Pepper, Green Bell
Apple Cranberry Pineapple
Apricot Cucumber Plum
Asparagus Egg White, Chicken Pork
Avocado Egg Yolk, Chicken Potato, Sweet
Banana Filbert Potato, White
Barley Garlic Pumpkin
Bean, Kidney Gliadin, Wheat Radish
Bean, Lima Gluten, Wheat Raspberry, Red
Bean, Pinto Grape, Red Red Snapper
Bean, Soy Grapefruit Rice, White
Bean, String Halibut Rye
Beef Honey Salmon, Pacific
Beet Lamb Sesame
Blueberry Lemon Shrimp, Western
Broccoli Lentil Sole
Buckwheat Lettuce Spelt
Cabbage, White Lobster, American Spinach, Green
Carrot Milk Squash, Zucchini
Casein Milk, Goat Strawberry
Cauliflower Mushroom, Common Sugar Cane
Celery Oat Sunflower
Cheese, Cheddar Olive, Black Tomato, Red
Cheese, Cottage Onion, White Tuna, Yellowfin
Cheese, Mozzarella Orange Turkey
Chicken Oyster Walnut
Clam, Manila Papaya Wheat, Whole
Cocoa Bean Pea, Green Whey
Coconut Peach Yeast, Baker’s
Cod, Atlantic Peanut, Runner Yeast, Brewer’s
Coffee Bean Pear Yogurt

You need to contact the practitioner first and discuss with him your concern then make an appointment for taking a blood strip sample through a small prick on the finger.


The test cost $295. plus 5% gst. and can take up to 2-3 weeks before getting the result.