L'Association pour la santé environnementale du Québec / Environmental Health Association of Québec


Diagnostic ToolsHospital Protocol

Diagnostic Tools

  • The Brief Environmental Exposure and Sensitivity Inventory (BREESI) is a screening tool whose three questions determine whether an individual should take the Quick Environmental Exposure and Sensitivity Inventory (QEESI). The QEESI is a validated 50-item questionnaire used worldwide to assess chemical intolerance (CI) whose prevalence is 8-33% in population-based surveys. To learn more about CI’s underlying disease process (Toxicant-Induced Loss of Tolerance, TILT) and the QEESI, visit
    Our research revealed that 97% of persons answering “Yes” to all three items on the BREESI had high CI scores as assessed by the QEESI. If two items were endorsed, approximately 84% of the sample had high CI scores. If one item was endorsed, 48% had high CI scores. 100% of those who answered “No” to all of the BREESI items, showed no evidence of CI on the QEESI. Any individual answering “Yes” to one or more of the three BREESI screening items should take the full QEESI at
  • The Quick Environmental Exposure and Sensitivity Inventory (QEESI) is a validated questionnaire for chemical intolerance and the most widely used screening instrument available for personal use. Researchers and clinicians around the world use the QEESI to document symptoms and intolerances. People who use the QEESI find it helpful for self-assessment. It’s also a useful tool for you to take to your doctor to explain your exposures and symptoms.
  • Taking An Exposure History: A mnemonic (CH2OPD2) helps to organize the history, and the forms below can be given to patients to be completed at home and reviewed at a subsequent educational counseling visit.

Hospital Protocol