Part No: AN863Issued year: 2016File size: 1.62mbFile type: pdf
This application note describes the use of ISOLUTE® ENV+ on-line cartridges in a fully automated on-line SPE-LC-MS/MS method for extraction and quantification of 16 acid herbicides in drinking and surface water.
Part No: SSI-LCMS-086Issued year: 2017File size: 0.37mbFile type: pdf
Catecholamines and Metanephrines were analyzed using a LCMS-8060 triple quadrupole mass spectrometer. Calibrators were prepared in synthetic urine and extracted using solid phase extraction. Extractions were performed using weak cation exchange on the EVOLUTE® EXPRESS WCX 10 mg 96-well plate from Biotage.
Part No: P164Issued year: 2017File size: 0.69mbFile type: pdf
Most drugs, both licit and illicit, are excreted in urine as glucuronide conjugates. Hydrolysis using beta-glucuronidase converts the glucuronidated metabolites back to their “free” or non-conjugated
form, increasing sensitivity for LC-MS/MS analysis. Hydrolysis using red abalone, abalone, and recombinant beta-glucuronidase enzymes was evaluated using an in-well hydrolysis plate to determine which provided the most efficient hydrolysis of glucuronide metabolites without affecting overall recovery of nonconjugated compounds. A glucuronide control containing 8 glucuronide compounds was used to determine the extent of hydrolysis that occurred. A non-conjugated control containing 96 licit and illicit drugs of abuse was evaluated to determine if signal suppression occurred as a result of enzyme hydrolysis.
Part No: AN862Issued year: 2016File size: 1.48mbFile type: pdf
This application note describes the use of EVOLUTE® EXPRESS ABN on-line cartridges in a fully automated on-line SPE-LC-MS/MS method for extraction and quantification of 13 commonly prescribed pharmaceuticals (with a range of characteristics) in water.
Part No: AN815Issued year: 2014File size: 1.52mbFile type: pdf
The method described in this application note achieves high recoveries of THC and an extended suite of common metabolites in oral fluid from Quantisal (Immunalysis) oral fluid collection devices.
This application note describes effective and efficient
ISOLUTE SLE+ protocols optimized for sample loading volumes of either 300 μL or 800 μL. The simple sample preparation procedure delivers clean extracts and analyte recoveries greater than 64% with RSDs of <10% for all analytes.
Part No: Issued year: 2016File size: 0.8mbFile type: pdf
Urine samples are neutralized using 0.5 M ammonium acetate and loaded onto weak cation exchange (WCX) Evolute Express plates (Biotage), preconditioned with methanol and water. Samples are washed with 20 mM ammonium acetate and water before elution in 0.5 % formic acid.
Department of Clinical Chemistry and Immunology, Heart of England NHS Foundation Trust, Birmingham, UK