![]() Despite these advantages, each LFIA has its own characteristics, which must be known by the practitioners if they want to use it correctly. In addition, these tests avoid unnecessary treatments and further investigation through follow-up testing. They provide immediate treatments in the events of potentially life-threatening diseases, specific treatments rather than presumptive treatments, and early measures to prevent transmission of the disease (i.e., in the hospital or the community). The LFIA tests have several advantages over conventional diagnostic tests. The goal is to have immediate results, so that certain diagnoses can be quickly included or excluded. Every year-in order to simplify detection methods and reduce costs-new lateral flow immunoassay (LFIA) tests appear in all fields of medicine, including cancerology, toxicology, and infectology, to be used directly in places where patients are cared for, with no specialized laboratories. However, they are expensive and require trained and qualified clinicians to conduct the analyses. ![]() The GC-MS or, even more, LC-MS, are the most efficient methods of analysis. Their quantifications are then carried out using UV, electrochemical, or fluorescence detectors. The most frequently used methods of drug detection today are based on procedures for separating compounds by chromatographic standard techniques (GC, HPLC, and LC). The concentrations of psychotropic drugs in biological matrices (saliva, blood, urine, etc.) are low, which requires very sensitive, selective, and appropriate methods for their detection and quantification. ![]() ![]() In addition, many psychoactive drugs, especially benzodiazepines (BZDs), are strongly associated with illicit drug use. This is because illicit drugs can affect the cognitive and motor functions. Monitoring the use of psychotropic drugs is a public health issue and is proving to be very useful in the workplace. ![]()
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