ELISA Detection of 30 New Amphetamine Designer Drugs in Whole Blood, Urine and Oral Fluid using Neogen®“Amphetamine” and “Methamphetamine/MDMA” Kits
Journal of Analytical Toxicology – July 11, 2016
Source: OpenAlex
Summary
Only 10% of 30 new amphetamine designer drugs tested positive using standard immunoassay kits, even at high concentrations of 10,000 ng/mL. These kits, designed for detecting substances like amphetamine, methamphetamine, and MDMA, showed limited effectiveness for the majority of new designer drugs in urine, blood, and oral fluid samples. This highlights a significant gap in forensic toxicology, as the assays cannot reliably identify these emerging substances in real-world scenarios, raising concerns about substance abuse detection and public health.
Abstract
Amphetamine designer drugs are central nervous system stimulants that are widely disseminated in the illegal market. Generally, in forensic laboratories, immunoassay methods are the first line of screening for these types of drugs in a biological specimen (typically blood, urine or oral fluid). In this article, we describe the cross-reactivity profiles of 30 new amphetamine designer drugs, using the Neogen(®) [Amphetamine Specific and Methamphetamine/3,4-Methylenedioxymethamphetamine (MDMA) assays] drug tests. To assess the potential matrix influence on the response, each assay was tested on whole blood, urine and oral fluid. Concentrations of 10,000 ng/mL were not sufficient to produce a positive response for the majority of the analyzed amphetamines. This clearly demonstrates that, although these kits are extremely effective for the target drugs for which they are intended (amphetamine, methamphetamine and MDMA), they cannot be used to reliably identify the tested designer drugs in real cases, as these concentrations greatly exceed those expected to be found in forensic samples.