Part No: PPS443Issued year: 2017File size: 2.31mbFile type: pdf
Analysis of drug panels in urine samples can be challenging, and the trend towards larger panels including multiple drug classes compounds the issues faced during method development.
This white paper examines a number of aspects of sample preparation, and their impact on the success of subsequent LC-MS/MS analysis of broad urine panels.
Section 1 examines the applicability of various sample preparation techniques: supported liquid extraction, reverse phase SPE and mixed-mode SPE, to the various classes of drugs extracted. In addition, hydrolysis approaches: enzyme type and protocol used (time, temperature), are compared.
Mixed-mode reverse phase/cation exchange SPE is widely used for extraction of basic drug classes from urine, but the inclusion of drugs and metabolites that exhibit ‘non-typical’ functionality within urine panels can be problematic. Section 2 examines the impact of various parameters (interference wash strength, elution solvent composition) on analyte retention, elution and extract cleanliness with particular focus on zwitterionic (gabapentin, pregabalin) and non-ionic (carisoprodol, meprobamate) drugs.
Part No: P112Issued year: 2014File size: 1.4mbFile type: pdf
This poster demonstrates the extraction of a range of drugs of abuse from oral fluid, collected with common collection devices, prior to UPLC-MS/MS analysis. The target analyte list includes benzodiazepines, z drugs, amphetamines, cathinones, opiates, cocaine, buprenorphine, PCP, THC-COOH, fentanyl and ketamine.
Part No: P132Issued year: 2015File size: 1.55mbFile type: pdf
This poster demonstrates the extraction of a range of drugs of abuse from oral fluid collection devices using supported liquid extraction suitable for UPLC-MS/MS analysis. Unlike some sample preparation techniques, SLE allows for the simultaneous extraction of cross-functional analytes in a single extraction protocol without forfeiting extract cleanliness.
The target analyte list includes benzodiazepines, z drugs, amphetamines, cathinones, opiates, cocaine, buprenorphine, PCP, THC-COOH, fentanyl and ketamine.
Part No: P087Issued year: 2014File size: 0.94mbFile type: pdf
This poster describes the extraction of a range of drugs of abuse (including barbiturates, THC and metabolites, benzodiazepines, z drugs, amphetamines,cathinones, opiates, cocaine, buprenorphine, PCP, fentanyl and ketamine) from oral fluid using supported liquid extraction (ISOLUTE SLE+) columns prior to GC-MS and LC-MS/MS analysis.
Part No: P151Issued year: 2016File size: 0.96mbFile type: pdf
This poster compares the performance of manual processing to a novel automated sample preparation system prior to GC/MS or LC-MS/MS analysis in forensic toxicology applications. Emphasis is placed on the potential for 96-well cross contamination and strategies for its elimination.
Part No: P156Issued year: 2017File size: 0.23mbFile type: pdf
Most drugs are excreted in urine as glucuronide conjugates. Hydrolysis using a beta-glucuronidase enzyme to convert the metabolites to their “free” form for analysis increases sensitivity. Red abalone (Kura Biotech), abalone (Campbell Scientific), and recombinant (IMCSzyme) beta-glucuronidase enzymes were evaluated to determine which provided the most complete hydrolysis of glucuronide metabolites without effecting the overall recovery of non-conjugated compounds.
EVOLUTE EXPRESS CX 96-well plates were used to extract hydrolysed urine samples, and the impact of th enzymes was compared.
MSACL 2017, Palm Springs
Part No: AN832Issued year: 2014File size: 1.78mbFile type: pdf
This application note describes the extraction of 47 drugs of abuse from oral fluid matrix after sampling via Quantisal collection devices prior to analysis by UPLC-MS/MS. Optimised protocols for 200 uL and 500 uL sample volumes are included.
Part No: AN836Issued year: 2015File size: 1.81mbFile type: pdf
This application note describes the extraction of 47 drugs of abuse and metabolites from oral fluid matrix collected using the Intercept Oral Fluid Drug Test Kit (Orasure Technologies), prior to UPLC-MS/MS analysis. The sample preparation is optimised to minimise matrix effects due to the buffers used in the collection device. Estimated LOQs range from 0.1-1 ng/mL for the various analytes.
Part No: AN837Issued year: 2015File size: 2.27mbFile type: pdf
This application note describes the extraction of 47 drugs
of abuse and metabolites from oral fluid matrix after sampling via Oral-Eze collection devices, prior to UPLC-MS/MS analysis using ISOLUTE SLE+ supported liquid extraction columns. Estimated LOQs of between 0.005 and 0.75 ng/mL (analyte dependant) are achieved,.
Part No: AN865Issued year: 2016File size: 2.02mbFile type: pdf
This application note describes the extraction, using ISOLUTE SLE+ supported liquid extraction columns, of amphetamine style compounds from oral fluid matrix collected using the NeoSalTM device, prior to GC/MS analysis.
Part No: AN855Issued year: 2015File size: 1mbFile type: pdf
This application note describes the extraction of a range of amphetamine-type compounds from whole blood, prior to GC/MS analysis. A protocol that allows the simultaneous extraction of various other drugs of abuse classes: barbiturates, benzodiazepines, cocaine and opiates, is also evaluated.
ISOLUTE® SLE+ columns with 1 mL sample capacity are used to extract whole blood samples following a straightforward sample dilution. No protein precipitation or other pre-treatment is required prior to sample loading. The sample preparation procedure delivers clean extracts, good recoveries and RSD values and LLOQs from 10 ng/mL (analyte dependant).
Part No: AN827Issued year: 2014File size: 1.73mbFile type: pdf
This application note describes the extraction of a range of amphetamines and metabolites from urine using supported liquid extraction and subsequent analysis by GC/MS. Prior to extraction, a simple oxidation step is performed to eliminate sympathomimetic compounds such as ephedrine and pseudoephedrine so they do not interfere with quantitation of methamphetamine.
Part No: AN742Issued year: 2011File size: 0.21mbFile type: pdf
This method describes the use of ISOLUTE SLE+ in 96 well plate format for the extraction of a range of amphetamines. This procedure is effective with sample volumes of 100 μL for analyte recoveries > 90%. For larger volume (500 μL) samples, see AN746.
amphetamines, AN742, ISOLUTE, SLE+, DOA, DRUGS OF ABUSE, FORENSIC
Part No: AN708Issued year: 2011File size: 0.09mbFile type: pdf
The following method(s) have been developed for the class-selective extraction of Amphetamine, Methamphetamine, Phentermine, MDA, MDMA, MDEA from human urine. The method is highly reproducible and offers an average recovery greater than 80%.
MIP, AFFINILUTE, SupelMIP, BIOTAGE, Amphetamines,
Part No: AN746Issued year: 2011File size: 0.21mbFile type: pdf
This method describes the use of ISOLUTE SLE+ in column format for the extraction of a range of amphetamines. This method is effective for sample volumes of 500μL with analyte recoveries > 95%.
Amphetamines, ISOLUTE, DOA, DRUGS OF ABUSE, SLE+, DRUG SCREEN
Part No: AN755Issued year: 2012File size: 1.03mbFile type: pdf
Ethyl glucuronide (EtG) and ethyl sulphate (EtS) are specific metabolites formed within the body after the ingestion of alcohol. In forensic toxicology, when tested together they provide more specific evidence of alcohol intake. This application note demonstrates the simultaneous extraction of both EtG and EtS in the same assay and represents further optimization of AN718 which showed single EtG extraction without EtS. Recoveries for EtG range from 90-105% and 80-103% for EtS across two formats of EVOLUTE AX columns with RSDs <10%. The LOQ is 10 ng/mL for EtG and 2 ng/mL for EtS across both EVOLUTE AX formats.
EVOLUTE AX, EVOLUTE, EtS, EtG, Ethyl Glucuronide, Ethyl Sulfate, SPE, Anion Excange, Urine, OASIS, Waters, Polymeric, Polmers,