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Home 5 News 5 Hair test for food intolerance or blood test – are they the same?

Hair test for food intolerance or blood test – are they the same?

When it comes to diagnosing food intolerances, two popular methods often emerge: the scientifically validated ELISA blood test and the cheaper hair testing method using bioresonance. While both claim to identify food intolerances, their accuracy, reliability, and cost vary significantly. Let’s explore why the ELISA blood test is considered superior and the factors contributing to the cost differences between these two methods.

What is the ELISA Blood Test?

The Enzyme-Linked Immunosorbent Assay (ELISA) is a blood test that measures the presence of specific IgG antibodies in response to various foods. This method is scientifically validated and widely used in clinical settings to detect food intolerances. The test involves collecting a blood serum sample, which is then analysed in a lab equipped with specialised equipment.

What is Hair Testing Using Bioresonance?

Hair testing for food intolerances typically involves using a bioresonance machine, which proponents claim can detect intolerances by measuring the body’s energy frequencies through a hair sample. However, this method lacks scientific validation and is not recognised by mainstream medical professionals. It’s important to note that hair bioresonance testing is not testing for antibodies toward food proteins as there are no antibodies in hair, so it cannot measure an immune response in the body.

Cost Differences Explained

  1. Laboratory Equipment and Technology: ELISA blood tests require advanced laboratory equipment and technology. High-quality microplates, spectrophotometers, and reagents are essential for accurate results. In contrast, hair testing uses relatively simple and inexpensive bioresonance machines, contributing to lower costs.
  2. Certification and Regulation: ELISA tests are subject to stringent regulatory standards and must comply with in vitro diagnostic (IVD) regulations. These regulations ensure the tests are safe, reliable, and accurate, necessitating regular audits and certifications. Hair testing, on the other hand, does not require such rigorous oversight, resulting in lower operational costs.
  3. Skilled Personnel: Conducting ELISA tests requires trained laboratory technicians who can handle and process blood samples accurately. The need for specialised staff increases the overall cost. Hair testing can be conducted with minimal training, further reducing expenses.
  4. Reagent Costs: ELISA tests use high-quality, scientifically-validated reagents that are expensive to produce and maintain. Hair testing avoids these costs, as it does not rely on biochemical reagents.

Validity of Each Method

ELISA Blood Test:

  • Scientific Validation: Numerous studies support the accuracy of ELISA blood tests in detecting IgG-mediated food intolerances. These tests have a solid scientific foundation and are accepted in the medical community.
  • Reliability: ELISA tests provide reproducible and consistent results, making them a reliable tool for diagnosing food intolerances.
  • Clinical Use: These tests are used by healthcare professionals worldwide and are often recommended for individuals experiencing chronic digestive issues, migraines, or skin conditions related to food intolerances.

Hair Testing Using Bioresonance:

  • Lack of Scientific Evidence: Bioresonance hair testing lacks robust scientific evidence. There is no credible research supporting its effectiveness in diagnosing food intolerances.
  • Inconsistency: Results from bioresonance tests can vary widely and are often not reproducible, leading to questions about their reliability.
  • Skepticism from Medical Community: The mainstream medical community remains skeptical of bioresonance hair testing, primarily due to its lack of validation and the theoretical basis behind it.


When comparing hair tests versus blood tests for food intolerance, it becomes evident that the ELISA blood test is the more reliable and scientifically validated option. While it may be more expensive due to advanced lab equipment, stringent regulatory requirements, and the need for skilled personnel, the accuracy and dependability it offers make it worth the investment. Hair testing using bioresonance, despite being cheaper, does not hold up to scientific scrutiny and is not recommended for diagnosing food intolerances.

For those serious about understanding their food intolerances, investing in the ELISA blood test is a wise decision, ensuring accurate results and better health outcomes.

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