Updated on 19 October, 2021
Although marijuana use is becoming increasingly socially acceptable, there are still many organizations that prohibit its use, such as the Navy, the Marines, the Army, the Air Force and the police. Marijuana use by those who are suspected of crimes is still a huge topic of controversy. Recently, marijuana use by suspected pot smokers was discovered during a sting operation in California. In one instance, an Air Force intelligence analyst reportedly smoked marijuana and later tested positive for the drug, even though he maintained that he never used the drug.
With state laws permitting medical marijuana use, some employers have begun accepting it into their workplace policies. It is not clear how the FDA, which recently approved a marijuana-based medication, will react to this trend. An individual who tests positive for active ingredient in marijuana is considered to be impaired under most circumstances. An individual who tests negative for the active ingredient does not necessarily incur impairment, but may still be subject to disciplinary action.
If you're concerned about your health and are subject to mandatory drug screening due to a job, military or other enlistment or induction, a medical marijuana use test may be a prudent course of action. While the substance has not been proven to have any significant medicinal value, marijuana use can result in negative drug test results. An individual who tests positive for active ingredient in marijuana by accident may be in violation of his or her employer's policy. An individual who tests negative may have reasonable cause to believe that he or she is not impaired. If you're in a situation where you believe that you're being investigated or questioned regarding your drug use, you should contact a drug-testing lawyer immediately and request a marijuana test.
Urine testing is the most common method employed by law enforcement and healthcare providers to determine the presence of controlled substances. Under these circumstances, law enforcement and healthcare professionals will usually collect a sample of the subject's blood or urine. Afterward, the analyst will compare the two samples using specialized software in order to detect false positives. False positives occur when an individual may test positive for marijuana based on information provided by the subject himself or herself, or based on information supplied by law enforcement officials. In these instances, corrections to the original test are conducted to eliminate possible false positives.
A highly sensitive screening method called ALCO (ALCO) scans are used to discover the presence of active ingredients in marijuana that might be present in smoked marijuana. ALCO works by emitting light that reacts with the specific concentrations of the analyte. Based on the results of the ALCO scan, healthcare professionals can determine whether a subject is under the influence of marijuana.
Different types of screening tests for marijuana utilize different analytical procedures to identify false-positive results. For instance, a commercially available test called HPLC (High-Performance Liquid Chromatography) can detect the presence of both active THC and inactive THC. However, because not all false-positives can be detected by this method, technicians usually combine ALCO with a newer, more sensitive testing method called Hi-Score. With the Hi-Score procedure, which is less sensitive than ALCO, healthcare professionals can also detect false positives for other drugs or compounds in the subject's urine or blood.
The most accurate urine marijuana test utilizes analytical chemistry techniques to determine the existence of both active THC and inactive THC. This type of test is quite sensitive and commonly detects only the highest concentrations of these two chemicals in the subject's urine or blood. Many laboratories also perform blood samples testing to detect even lower concentrations of these two chemicals. Due to the high concentration levels of these two active ingredients in cannabis, a negative urine drug screen can rarely detect these substances.
To prevent the possibility of false positive urine drug screens, many laboratories include a bench top metabolite screen. A metabolite screen, which looks similar to a drug screen, specifically for THMs and CBD, is more sensitive than a standard urine test and provides results within seconds. Due to the fact that CBD and THC are combined in cannabis, it is impossible to separate them in a standard sample. A bench top metabolite screen can detect these two chemicals in the patient's blood stream, thus providing far more reliable results than any other urine test.