No, pure CBD oil does not contain THC, and therefore would not affect a drug test testing for THC. Most widely-used drug tests are comprised of an immunoassay that has antibodies for detecting metabolites that are produced from the oxidation of THC. These drug tests do not have cross-reactivity to CBD. Therefore, they give negative results when only pure CBD is used. One study of CBD oil users revealed that unlike THC, CBD does not show up on drug tests (source.)
This is a hugely beneficial effect of CBD. Free radicals are the culprits when it comes to oxidative damage and inflammation. But CBD’s antioxidant properties can help to combat the negative effects of everyday exposure to elements that increase the production of free radicals. These elements include pervasive, but hugely unsurprising, things like:
Kozela, E., Lev, N., Kaushansky, N., Eilam, R., Rimmerman, N., Levy, R., Vogel, Z. (2011, July 12). Cannabidiol inhibits pathogenic T cells, decreases spinal microglial activation and ameliorates multiple sclerosis?like disease in C57BL/6 mice. Retrieved January 17, 2018, from https://bpspubs.onlinelibrary.wiley.com/doi/full/10.1111/j.1476-5381.2011.01379.x
We have receptors for cannabinoids in the whole body, but the first type — CB1 — are very dense in the pain pathways of the brain, spine, and nerves. The second type — CB2 — is more important for the immune system but is also involved in inflammation. By gently acting on both pathways, our internal cannabinoids and CBD can balance both pain and inflammation [R+].
So am I to assume, due to no response/deleted comment that my simple question was too difficult to answer? With all the technical & correct information you have on you GREAT website, can someone (?) not simply correct or acknowledge the FACT the your NOT using nano-particle size product? I am truly interesting (for my wife) in CBD, have done my research, and I love working with numbers which is why if found this discrepancy. Comments welcome, but avoidance is disturbing.