Although blood tests are not nearly as common as urine tests for screening for CBD and cannabinoids, they can be used to detect THC metabolites. The reason they’re not the preferred method of drug screening is because of how quickly THC is eliminated from your bloodstream.
Urine tests are the most popular and common method of drug screening for employers. The detection-window for THC through urine tests can vary widely.
It hinges mostly on the dose you took and your frequency of use. Typically, these metabolites can show up on a urine test anywhere between three days to two weeks after the last time taken.
Different drug tests have different cut-off levels. Legally, hemp products can contain up to 0.3% of THC.
How Long Does CBD Stay In Your Blood?
There are many different factors to consider that influence how long CBD stays in your system as well as how it affects you. How long it lasts and is detectable is not the same for everyone. It can depend on:
Let’s take a closer look at the different ways you can take CBD and how your body processes it. Then we’ll walk through how long it will stay in different systems of your body.
According to the Mayo Clinic, THC metabolites can be detected for as long as 15 days post-administration among frequent and daily users. However, the research also suggests that these numbers can vary based on the dosage.
How Long Does CBD Stay In Your Hair?
If you take a dietary supplement or edible that contains CBD, the effects won’t be felt immediately. Your metabolism and diet can influence how soon you feel the effects. However, symptoms are often felt within an hour of digesting it.
If you consume CBD products in large amounts, and on a regular basis, it’s possible that this test – as well as the others – could detect it for longer.
CBD oil extracted from hemp is not supposed to contain more than 0.3% THC. However, it’s not uncommon for sellers to mislabel their products as THC-free hemp when, in reality, it’s a low-quality oil extracted from marijuana. And marijuana does contain THC.
What are the odds that CBD oil users will test positive when subjected to illicit drug screenings? And what can be done to prevent it?
CBD is one of many active chemical compounds in cannabis plants. One reason it’s becoming more popular is because it's said to lack THC.
Secondhand Exposure to THC
If you take CBD oil, you can take steps to try to prevent failing a drug test:
Arno Kroner, DAOM, LAc, is a board-certified acupuncturist, herbalist, and integrative medicine doctor practicing in Santa Monica, California.
Does CBD Oil Contain THC?
Hemp also contains many cannabinoids, which is a name for the compounds found in cannabis. CBD is only one example.
A study conducted at the internationally known Lautenberg Center For Immunology and Cancer found that CBD was more effective at treating inflammation and pain when used with other cannabis plant compounds.
Workers who use a lot of CBD (cannabidiol) for pain, anxiety, insomnia, or a host of other symptoms, can accidentally (and unfairly) fail drug tests for cannabis in certain cases, media and experts report.
Can you fail a drug test for CBD oil ? Not really, but sort of
Mouth swabs don’t check for CBD—again, they’re checking for THC, said Sample. So no, CBD won’t show up on a standard workplace drug test mouth swab. THC will, though, so keep off large amounts of CBD with trace levels of THC.
Does CBD show up in a hair follicle test?
The cannabis plant produces both THC and CBD. Medical cannabis and industrial hemp are cousins—both create dozens of similar compounds called cannabinoids.