NutriCheck I Complete Intolerance Test

An IgG test (food intolerance) measures the production of IgG antibodies by your immune system in response to certain foods. These antibodies are a natural response of your body and often develop after immediate consumption. Current scientific evidence suggests that elevated IgG levels may indicate that your body has frequently consumed these products and may have developed immune tolerance. The test helps you identify potential intolerances.

Once your blood sample has arrived at the laboratory, the average processing time is approximately 20–25 business days. This includes the entire analysis process and validation of the results. The results will then be available to you as a PDF document in your user account. If you opted for a printed booklet, an additional delivery time of 2 to 3 weeks is required for printing and shipping.

The symptoms can be varied and affect the entire body. They usually occur shortly after consuming the incompatible food. The most common symptoms include:

• Gastrointestinal problems such as diarrhea, abdominal pain, and nausea
• Skin rashes
• Respiratory symptoms such as a runny nose, coughing, wheezing, or shortness of breath
• Tingling, redness, and swelling in the mouth, on the tongue, and in the throat

In severe cases, an anaphylactic shock may occur—a serious allergic reaction that often begins with dizziness and can be life-threatening. This condition requires immediate medical attention. A food intolerance test can identify both mild and severe symptoms so that they can be specifically avoided.

More than 170 foods can cause allergic reactions or intolerances. However, the most common triggers include:

• Cow’s milk and eggs
• Legumes, especially peanuts and soy
• Tree nuts, especially nuts
• Wheat
• Fish and shellfish

Allergies to certain fruits, vegetables, and spices are less common but still known. Many of these food allergies develop during childhood. Some, such as allergies to cow’s milk, eggs, wheat, and soy, often disappear during adolescence. Allergies to nuts, fish, and shellfish, on the other hand, usually persist for life. You can conveniently find out at home which products are currently causing you problems using a food intolerance test.

There is an important difference between food intolerances and food allergies that can affect symptoms and test results.

Food intolerances are often based on delayed immunological reactions (IgG-mediated) and manifest as nonspecific symptoms such as digestive problems, headaches, or fatigue. These symptoms often occur hours or days after consuming a particular food.

In contrast, food allergies are generally characterized by immediate reactions that often occur right after consuming an allergenic food. These allergic reactions are usually mediated by IgE antibodies and can lead to symptoms such as swelling of the mucous membranes, skin rashes, or breathing difficulties.

Using the test kit, you collect a few drops of blood from your fingertip and send the sample to the laboratory. There, your blood is tested for specific IgG antibodies against more than 80 foods. The at-home food intolerance test is simple, reliable, and provides you with specific recommendations for what to do.

If you regularly suffer from digestive problems, skin reactions, or nonspecific symptoms after eating, a food intolerance test may be useful. The test can also provide important insights into your diet if you experience unexplained weight gain, fatigue, or chronic complaints.

After the food intolerance test, you will receive a personalized assessment with guidance on which foods you should preferably avoid. Based on the results, you can specifically start an elimination-based diet, in which problematic foods are reduced or replaced. This helps relieve the strain on your gut and effectively alleviate symptoms such as bloating, skin problems, or fatigue.