this review title is: does not work and the content is: i was recently diagnosed with a nickel allergy i bought this test hoping to get help figuring out what things in my house i should avoid touching i am very disappointed that the test does not work i tested my brushed nickel appliances as control and got zero results it obviously does not work now i have to look for another solution and i am still not sure what things are in my house that can make me sick i would give it a zero rating.there are other information for this review, one is this reviewer did purchase it and the other is 4 people think this review is helpful.