There is no reliable lab test that we have found, but the Candida Questionnaire has been a very reliable part of Dr. Ivker’s process for years. It is estimated that over 80% of the adult population has some form of candida overgrowth. Over 95% of chronic sinus sufferers will usually always have a candida overgrowth or fungal situation. Take the Dr. Crook’s Candida Questionnaire. If you score high on this test it is recommended that you follow the Gold Tutorial and Sinus Survival Guidebook. Many find that using this step-by-step program along with the coaching of a trained Respiratory Healer is an effective approach. Candida is a very challenging condition to eliminate unless you follow the recommended process. We have placed the Dr. Crook’s Questionnaire is on the Free Silver Member site and Gold Members site.