Among the samples they analyzed, two tested positive for nicotine, demonstrating for the first time that the drug can survive in detectable amounts in ancient plaque. (rdmag.com)
Powerfood Active contains no psychoactive properties and THC levels below detectable amounts in standard employment or athletic screening. (onnit.com)
It is material that does not produce detectable amounts of light but it does have a noticeable gravitational effect. (astronomynotes.com)