Food Intolerances Test in Bangkok

At HE Clinic, our Food Intolerances Test is designed to support people with ongoing, non-urgent symptoms by providing a clearer way to explore possible food-related patterns. The test analyses food-specific IgG responses across 200+ common foods and is best used as supporting information together with your symptoms, diet history, and a clinician-guided plan.

This service may be helpful for those experiencing concerns such as bloating, digestive discomfort, irregular bowel habits, or skin symptoms that seem to flare after certain foods. Results vary, and many symptoms can have multiple causes—so we focus on safe, realistic next steps rather than guesswork.

What the test measures

This is an IgG blood panel, which measures food-specific IgG antibodies. It is not a food allergy (IgE) test and does not diagnose food allergy.

Because IgG can reflect exposure to foods, the results should not be treated as a stand-alone diagnosis of intolerance. Instead, we use the report to help prioritise foods for a time-limited elimination and planned reintroduction trial when appropriate.

If you have immediate reactions such as hives, swelling, wheezing, or breathing difficulty, seek urgent medical care and ask about a standard allergy assessment.

How results are used

Your report provides graded levels for each food based on the laboratory’s reference ranges. Rather than removing many foods at once, we help you:

• Identify the most relevant items to trial first
• Plan a structured elimination period
• Reintroduce foods step-by-step to confirm whether they truly affect symptoms
• Avoid unnecessary restriction and maintain balanced nutrition

Symptoms that may prompt testing

People sometimes request this test when they experience:

• Bloating, abdominal discomfort, irregular bowel habits
• Fatigue or brain fog
• Headaches
• Skin flares or itchiness

These symptoms can also be caused by many other conditions, so a consultation is recommended to rule out red flags and choose the most appropriate next step.

What you will receive

Alongside your lab report and clinician review, you’ll receive a practical guide to help you apply results responsibly, including:

• Your IgG levels and category per food (based on lab ranges)
• A personalised action plan for elimination and reintroduction (when appropriate)
• A food tracker to monitor symptoms and progress
• A grocery guide to help identify common hidden ingredients
• Nutrition tips to support balanced intake during dietary changes

Next steps after testing

If several foods show higher IgG levels, we typically start with a small number of priority foods for a defined trial period, then adjust based on your symptom tracking and response. Some patients report improvement within weeks to a few months, while others may see minimal change depending on the underlying cause. Results vary.

Our team can support meal planning, substitutions, and strategies to keep your diet nutritious, sustainable, and aligned with your goals.