A seven-panel drug test is a test that detects seven specific drugs, substances and their metabolites using one urine sample. This type of test detects THC/marijuana, cocaine, morphine, methamphetamines, oxycodone, benzodiazepines and barbituates.
This type of test is typically very rapid, with results visible within 3 to 8 minutes after the test is administered. Usually, the test has wicks that are dipped into the urine sample. Results will either read "negative" next to each listed drug, which means there's no drug of that particular type detected in the sample, or "positive," which means the drug was detected. There is also a reading of "invalid" with some tests. This reading generally occurs when the test was not administered correctly.