I did not provide any information regarding known allergies, only sending in the moderately completed form and hair sample. The results that were returned matched the very expensive prior tests I had paid for through my allergist, and I also purchased a very expensive test offered by another company online just to do a third comparison. The Allergy Testing Company info matched up with other company test results and then exceeded the results by providing more items and chemicals that I was "moderately reactive" to... apparently, the consumption of the moderate items was negatively affecting my health and once I removed those items from my diet, my IBS and gastro symptoms definitely improved. I appreciate the various tests I have subscribed to through Allergy Testing Company and have found them to be useful tools in helping me improve my intake of foods and exposure to reactive chemicals.