Phencyclidine [PCP]

Phencyclidine, often referred to as “angel dust,” or PCP was developed in the 1950s as an intravenous surgical anesthetic. As an illicit drug, it can be smoked, snorted or injected. Once quite popular, it is now relatively uncommon.


A class of drugs derived from the opium poppy plant, Papaver somniferum. This includes both illicit drugs (heroin) and prescription drugs (morphine).

Negative Result

A result that indicates that the specimen did not exceed certain levels of drug...

Invalid Drug Test

This is a drug test that has been tampered with and therefore invalidated for drug testing.

Ethyl sulfate [ETS]

Ethyl sulfate. It is tested in conjunction with EtG for confirmation purposes. ETS is a direct, bio-marker of alcohol ingestion that is not susceptible to degradation by bacteria...