Ans: More research is needed to ascertain this answer completely. Now logically, HXC is similar to Delta-9 THC; it is just an isomer of Delta-9 THC. So, after the consumption of Delta-9, it usually breaks down into 11-hydroxy-THC. In fact, this holds true for other cannabinoids as well. Therefore, using that logic, HXC should also break down into the former. Now it is this 11-hydroxy-THC chemical is what any cannabis-focused drug test is looking for. So logically, after consuming HXC, you can fail a drug test.