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A Unified Sample Preparation Procedure for General Unknown Screening (GUS) of Compounds in Whole Blood Samples

3 Mar 2017

General Unknown Screening (GUS) is the screening of many compounds from a whole blood matrix, which is especially important in cases where an affected individual is incapacitated, unaware of what was taken, or deceased. This application note describes a universal sample preparation procedure for whole blood samples and a method for neutralising the undesirable effects of strong solvents to allow immediate chromatographic analyses. This is a simple and fast procedure that yields successful and reliable analyte identification.

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Sample PreparationSample preparation can improve the quality and speed of separation techniques. Products to assist sample preparation include filtration equipment, evaporators, membranes and sieves.LC-MSLC-MS (liquid chromatography-mass spectrometry) systems and equipment are used for separation and quantitative analysis of complex mixtures, combining liquid chromatography and mass spectrometry. Quantify proteins, contaminants, pesticides or screen for drug metabolites with a high level of sensitivity. LC-MS systems and equipment include reverse phase, normal phase and specialized columns integrated with various MS detectors such as time-of-flight (TOF), quadrupole, orbitrap or ion trap mass analyzers. LC-MS/MS instruments equipped with a qTOF or triple quadrupole analyzer give greater sensitivity and resolving power to your analysis. Find the best LC-MS equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Mass SpectrometryMass spectrometry (MS) is a powerful analytical technique used to identify and quantify molecules based on the mass-to-charge ratio of gas-phase ions. It provides detailed information about the structure, composition, and properties of compounds and is widely used across fields such as environmental monitoring, materials science, drug discovery and development, food and beverage testing, and wider chemical research. Key MS techniques include tandem mass spectrometry (MS/MS), liquid chromatography–mass spectrometry (LS-MS) and inductively coupled plasma (ICP-MS). Choosing from these wide range of techniques and technologies can be a daunting task, so keep up to date with scientific applications, performance expectations, and customer reviews here all in one place. Visit our product directory to receive quotes direct from the manufacturer. HematologyIn Haematology / Hematology, complete blood cell counts (or full blood counts) are obtained using automated blood count analyzers to enumerate blood cell types.  Hematology also encompasses haemostasis and coagulation, thrombophilia and hemophilia, plasma viscosity and ESR analysis, hemoglobinopathies, cell morphology and haematinic measurement.Evidence Collection and AnalysisEvidence Collection and Analysis is the retrieval and subsequent investigation into criminal evidence obtained from a crime scene. Forensic genetic instruments, kits and reagents enable the analysis of evidence collected  at the crime scene. Reagents and kits for presumptive analysis for body fluids such as blood, saliva and semen in addition to drugs and narcotics test kits are used for CSI. Fingerprinting equipment, forensic light sources, casting kits and equipment for collecting recoverable materials can be found in the directory.Toxicology / Drugs of Abuse TestingToxicology and Drugs of Abuse Testing is the investigation into toxic and illegal substances found at the scene of a crime or from a suspect and / or victim associated with a scene of a crime. Analyzers, immunoassays and drugs of abuse test kits and presumptive test kits are an essential aspect of toxicology investigation.Drugs of AbuseA drug of abuse is a drug that has been taken for non-medical purposes. Such drugs can have mind-altering effects, with some causing dependence and addiction.Drug TestingIt is essential to test the efficacy and toxicity of drugs at every stage of their development to ensure that a pharmaceutical product is fit for purpose and safe for use before reaching the stage of mass production and distribution.Blood AnalysisThe analysis of blood is vital for many areas of life sciences and forensic investigations. Blood samples can be tested for a number of different reasons such as diagnosis, glucose levels, cholesterol and drug testing.LC-MSLiquid Chromatography-Mass Spectrometry (LCMS) is a powerful analytical technique that combines the separation power of liquid chromatography with the detection capabilities of mass spectrometry. It is widely used for qualitative and quantitative analysis of complex mixtures in pharmaceuticals, proteomics, and environmental studies. Browse our peer-reviewed product directory to find the best LCMS systems, compare products, check reviews, and get pricing directly from manufacturers.
A Unified Sample Preparation Procedure for General Unknown Screening (GUS) of Compounds in Whole Blood Samples