Gene testing is foolproof since it scans the building blocks of humans.

I am not sure if this is a true or false statement, but if it is, I believe that the answer would be false. Few things are foolproof, and there are a few setbacks to gene testing as well that make it not foolproof. In most cases of genetic testing, there is no way to measure the accuracy of the test. In addition, the privacy of genetic testing may not actually be as private as you would like to believe. Finally, few genetic tests, including disease-prediction tests, give you any results that you can act upon; you can always take general precautions, but a genetic test will not tell you how to avoid getting a disease. Hope this helps.