For a long time, if you suspected food was behind your chronic symptoms, the advice was to keep a food diary and try elimination diets. Solid advice in theory. In practice, months of effort often produce inconclusive results because the delay between eating a trigger food and experiencing symptoms makes the connection nearly impossible to see.
More people are now choosing to discover food intolerance tests that use clinical measurement rather than observation. Here’s what they’re finding.
The Symptom List That Sounds Familiar
Bloating after meals that seems random. Fatigue that doesn’t improve with more sleep. Headaches that come and go without obvious cause. Skin that flares up unpredictably. Joint pain your GP can’t explain. Difficulty losing weight despite reasonable diet and exercise.
These are the symptoms IgG food intolerances are associated with. They’re non-specific, which is why standard medical testing often comes back normal. There’s nothing acutely wrong. The problem is chronic, low-grade inflammation driven by ongoing immune reactions to foods you eat regularly.
What IgG Testing Actually Does
ImuPro measures IgG antibodies in your blood serum. When your immune system reacts to a food protein, it produces IgG antibodies. Higher concentrations of specific IgG antibodies indicate your immune system has developed a reactivity to that food.
The test covers up to 270 foods and additives with the Complete test. Results categorise every tested food into not elevated, elevated, or highly elevated based on your individual antibody levels.
The delay between eating and reacting, hours to days, is exactly why this can’t be figured out through observation alone. The test bypasses that problem entirely by looking directly at your immune response.
The Difference Between Tests
Not all food intolerance tests measure the same thing. Hair testing has no scientific basis for IgG measurement. Cytotoxic whole blood testing has reproducibility issues. Skin prick testing identifies IgE allergies, not IgG sensitivities.
ImuPro uses ELISA blood serum testing processed in a certified German laboratory. This method is stable, reproducible, and specific to the IgG antibody classes that are clinically relevant for delayed food reactions.
The specific measurement of IgG1, IgG2, and IgG3 subclasses distinguishes ImuPro from tests measuring total IgG or IgG4, which behave differently and have attracted more scientific criticism.
Options for Different Situations
Screen+ covers 44 common foods. A reasonable starting point.
Basic 90 covers 90 foods with nutritional guidelines.
Complete 270 is the most comprehensive food sensitivity test available in Australia, covering 270 foods and additives including herbs, spices, sweeteners, preservatives, and thickening agents that most tests don’t include.
Vegetarian 221 matches Complete coverage without meat and fish.
Histamine Intolerance testing can be added to any kit using the same blood sample.
After the Results
Results include a structured three-phase protocol. Elimination reduces inflammation by removing reactive foods. Provocation identifies confirmed triggers. Stabilisation finds your sustainable long-term dietary approach.
Complete and Vegetarian tests include personalised nutritional guidelines and a recipe booklet built around your specific non-reactive foods.
Since 2005
ImuPro has been providing this testing to Australians and New Zealanders since 2005. The International Scientific Advisory Board, formed in 2013, includes specialists from seven countries contributing to methodology and clinical guidance.
If symptoms have been your normal for longer than they should be, discovering what’s actually driving them through proper testing is a better approach than continuing to guess. Start at imupro.com.au or call 1300 481 151 to find out which test fits your situation.