What is a 4 panel drug test?

A 4 panel drug test is a type of drug screening test that looks for the presence of four different classes of drugs in a person's system. These typically include:

1. Marijuana (THC)
2. Cocaine
3. Opiates (such as heroin, morphine, and codeine)
4. Methamphetamines (including amphetamines and MDMA)

This type of drug test is commonly used in workplaces, schools, and for other purposes where drug use is a concern. The test can be done using a urine, saliva, or hair sample, and results are usually available within a few minutes to a few days, depending on the testing method.

It's important to note that a 4 panel drug test may not detect all types of drugs, so additional testing may be required if there is suspicion of other drug use. Additionally, false positive results can sometimes occur due to factors such as medications or certain foods, so it's important to discuss any potential issues with the testing provider.