- Last Update On : 2013-11-18
Urine drug screens are frequently ordered on patients who exhibit symptoms of intoxication, experience trauma or have a history of drug ingestion. Most hospital laboratories use immunoassays to detect drugs because they are relatively simple to perform, have high sensitivity for drugs of abuse and provide rapid turnaround time. One example is the Triage® TOX Drug Screen, which is a fluorescence immunoassay for the qualitative detection of 10 distinct drug classes in urine, including acetaminophen/paracetamol, amphetamines, methamphetamines, barbiturates, benzodiazepines, cocaine, methadone, opiates, phencyclidine, tetrahydrocannibinol (THC) and tricyclic antidepressants (TCA).
Screening assays for drug of abuse are designed to detect urine drug levels above a predetermined cutoff concentration. The threshold concentration, above which each drug class will be detected by the Triageâ TOX Drug Screen, is summarized in the following table. The acetaminophen/paracetamol a