LITTLE ROCK, Ark. — CBD is now a billion dollar industry.

The market exploded with oils, lotions, gummies, even pet treats.

It is perfectly legal to consume CBD, yet there have been reports that people who've used it, have failed an employee drug test. 

Can that really happen?

Our sources to verify whether consuming CBD could make you fail a drug test include Quest Diagnostics, one of the largest US drug testing companies. 

And the owner of the local CBD specialty shop, Healing Hemp, Mark Roberts, who says that you could possibly fail a drug test.

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"Yes, you could possibly fail if you're using a full spectrum CBD product."

What does it mean for something to be a full spectrum CBD product?

Legally, in all 50 states, CBD is allowed to contain point 3% THC (the substance in marijuana that gets you high.)

But, something to take note of, is that not all CBD products contain that THC.  

"Most products with no THC will say 'no THC' or 'zero THC,' that's a good product and that's good labeling practice," Roberts said. 

The problem is, with the industry being so new, it's not yet regulated. So unless you do your research, you may not know what you're getting.

At Healing Hemp, they will randomly send products for lab testing themselves. They only carry products that have been tested, so you'll know exactly what's in them.

"Most of the products will have test results with them either on file or you can scan on your phone while you're in the store and look at the test results." 

That way, you can actually see if there really is no THC. 

And if there is THC, it's typically not much.

"At three-tenths of a percent, it's so minute there's no psychoactive effect at all—none— but it will show up on a test."

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Quest Diagnostics said it never tests for CBD or cannabidiol, only THC. On its blog site, it states: "it is possible ... that the use of these products could cause a positive urine drug test result for marijuana metabolites."

So we can verify that SOME CBD products could cause you to fail a drug test, but only if they contain THC.

The best advice is to do your research and buy reputable lab-tested products.

Also, the FDA held a public hearing in May about CBD. It will take public comments on safety, manufacturing, product quality, marketing, labeling, and sales until July 16.