Guess what, folks? PCR tests are qualitative, not quantitative. And not only does this mean PCR can't be used to diagnose an illness, it ALSO MEANS that so-called "non-GMO" testing is largely invalid because of the claims that foods are "non-GMO" if they contain less than 0.9% GMOs. That's a quantitative expression, and PCR can't determine that. Thus, ANY detection of GMOs in a food could mean it's all GMO, but that they just didn't cycle the PCR instrument enough times.