Part No: P144Issued year: 2016File size: 0.6mbFile type: pdf
The ability to extract a broad range of different drugs from a biological matrix allows for the expedited analysis of a patient sample using LC-MS/MS. Typically small molecules are extracted from matrices like urine based on their polarities. A fast and reliable sample preparation method that could be implemented to extract drugs of different polarities from urine could be used as a screening tool to quickly identify the presence of illicit drugs in patient samples using LC-MS-MS.
This poster demonstrates the utility of supported liquid extraction for the extraction of over 30 different acidic, basic and neutral drugs in urine prior to LC-MS/MS.
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: 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: 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: AN752Issued year: 2011File size: 0.3mbFile type: pdf
This method describes the use of ISOLUTE SLE+ supported liquid extraction 1 mL sample volume columns to extract a range of barbiturates from human urine. The analysis of these analytes was carried out by GC-MS. This simplified and efficient extraction method has significant analyte recoveries ranging from 103-108% with LOQs of 10 ng/mL and RSDs <10%.
Barbs, Barbiturates, SLE, SLE+, ISOLUTE, GCMS, DoA, Forensic, Work Place Drug Testing, Supported Liquid Extraction, GC
Part No: P046Issued year: 2011File size: 0.84mbFile type: pdf
The objective was to develop a GC-MS assay for the determination of barbiturates from urine matrix using Supported Liquid Extraction (SLE). The SLE extraction mechanism is very efficient, delivering higher analyte recoveries and cleaner extracts than equivalent LLE methods.
Barbiturates, SLE, Supported Liquid Extraction, Forensic, SOFT, Urine,
Part No: AN820Issued year: 2014File size: 1.7mbFile type: pdf
This application note describes the extraction of barbiturates from oral fluid matrix collected using the Intercept Oral Fluid Drug Test Kit(Orasure Technologies), prior to GC/MS analysis.
The ISOLUTE SLE+ protocol is optimized for 400 μL and 1 mL sample
capacity formats. The simple sample preparation procedure delivers clean extracts and analyte recoveries greater than 90% with RSDs lower than 7% for all analytes.
Part No: AN868Issued year: 2016File size: 1.59mbFile type: pdf
This application note describes the extraction of barbiturates, using ISOLUTE SLE+ supported liquid extraction columns, from oral fluid matrix collected using the NeoSal collection device, prior to GC/MS analysis.
Part No: AN824Issued year: 2014File size: 1.25mbFile type: pdf
This application note describes the extraction of Butalbarbital, Butabarbital, Amobarbital, Pentobarbital,Secobarbital, Hexobarbital and Phenobarbital from oral fluid matrix collected using the Oral-Eze® collection devices, prior to GC/MS analysis.
Part No: P111Issued year: 2014File size: 0.45mbFile type: pdf
This poster describes the extraction of barbiturates from oral fluid collected using common collection devices using ISOLUTE SLE+ Supported Liquid Extraction columns, optimised for GC-MS analysis.
Part No: IST1032AIssued year: 2011File size: 0.13mbFile type: pdf
The following method was developed for the extraction of barbiturate drugs from urine, including: butabarbital, amobarbital, cyclobarbital and phenobarbital. Typical recoveries for these drugs are > 85%.
ISOLUTE, BIOTAGE, HCX, DOA, Nervous System
Part No: AN853Issued year: 2015File size: 0.7mbFile type: pdf
This application note describes the extraction of barbiturate compounds from whole blood, prior to GC/MS analysis. This protocol also allows the simultaneous extraction of various other drugs of abuse classes: amphetamines, benzodiazepines, cocaine and opiates.
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 20 ng/mL (analyte dependant).