GEN-MKT-18-7897-A
Feb 6, 2019 | Blogs, Forensic | 0 comments
Drug testing is a moving target. As novel psychoactive substances (NPS) rapidly emerge as a new class of designer stimulants (DS), global use has reached an all-time high over the last decade. Supposedly ‘legal’ alternatives to internationally controlled drugs, these compounds are typically manufactured ‘underground’ in unregulated laboratories by teams that are a step ahead of regulators. By simply altering the concoction of chemicals, the drugs slide under permissible legal radars.
With NPS-related deaths on the rise, the time it takes to detect these metabolites in forensic samples is critical. Clearly, there is a greater need for new technologies and methodologies to detect new substances and take an appropriate course of action to save lives.
I Don’t Know What I’m Looking for (But I’ll Know When I Have Found It)Trying to look for that “unknown” in a complex biological sample can be harder than finding a disguised fugitive in Grand Central Station at rush hour! It seems like an impossible task. The fast-paced nature of the market combined with widespread availability of an increasing number of substances is frightening. In fact, at the dawn of the millennium, the UN Office on Drugs and Crime (UNODC) listed only a handful of NPS. By 2008 the number was up to 26. Now more than 560 NPS are currently being monitored by the European Monitoring Centre for Drugs and Drug Addiction, with 100 new agents identified in 2015 alone.
Traditional drug screening tends to take a two-prong approach:
Where Unknown Compounds Can Hide, We Can FindIt seems that identifying the unknown in the evolving designer drug market, knowns are not that simple. Fret not! High-Resolution Accurate Mass Spectrometry (HRMS) innovation such as the SCIEX X500R QTOF system coupled with a detailed toxicology screening method for 664 forensic compounds can do the job.
The good news? There’s a concise and comprehensive way to screen for unknown substances in your forensic evidence. This technote shows how our HRMS system powered by SCIEX OS Software work together. Discover a single-injection method for screening 664 most up-to-date forensic compounds, with library searching to automate and confidently establish the identification of unknowns in an efficient, all-in-one workflow.
Read the tech note today by filling out the form on your right and downloading our Forensics Compendium.
Finding the right information shouldn’t slow you down. Whether you’re troubleshooting your mass spec, learning something new, or optimizing performance, access to the right resources at the right moment makes all the difference.
As an analytical strategy, middle-down mass spectrometry (MS) workflows characterize biotherapeutic proteins by analyzing large, digested protein fragments or defined subunits, rather than fully intact proteins (top-down) or digested peptides (bottom-up). A middle-down strategy combines the strengths of top-down and bottom-up approaches by delivering high sequence coverage and structural specificity while maintaining relatively simple sample preparation. In practice, middle-down analysis enables accurate mass measurement, rapid sequence confirmation, and localization of key post-translational modifications (PTMs) on protein subunits that are directly relevant to product quality.
In biopharmaceutical development, sequence variants (SV) are considered an inherent risk of producing complex proteins in living systems. Sequence variants are unintended changes to the amino acid sequence of a biotherapeutic and can be caused by errors in transcription or translation in the host cell, or cell culture and process conditions. Detailed analysis of SVs is important in process and product development to ensure the drug’s safety and efficacy. Even low‑level sequence variants can have significant implications for product quality, safety, and efficacy, making their accurate detection and characterization a critical requirement across development, process optimization, and regulatory submission.
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