Cannabinoid (Marijuana) Screen, Blood

A cannabinoid (marijuana) screen is a test that detects the presence of cannabinoids, the active chemicals in marijuana, in a person's blood. This test can indicate recent marijuana use and is commonly used in drug testing programs for various purposes, such as employment screening and monitoring individuals on probation or parole.

The results of a cannabinoid screen can vary depending on the sensitivity of the test and the frequency and amount of marijuana used. In general, cannabinoids can be detected in the blood for a few hours to several days after use, with heavy users potentially testing positive for a longer period of time.

It's important to note that a positive result on a cannabinoid screen does not necessarily indicate impairment or recent use of marijuana, as cannabinoids can remain in the body even after the effects of marijuana have worn off. Additional confirmatory testing may be needed to determine the exact timeframe of marijuana use.

Overall, a cannabinoid screen is a useful tool for detecting recent marijuana use and maintaining a drug-free environment, but it is important to interpret the results in conjunction with other relevant information and use them as part of a comprehensive assessment of an individual's drug use history.