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Clean Screen® DAU Columns in Zolpidem urinary metabolite detection study

Researchers investigated and validated a method for the extraction and analysis of zolpidem and its metabolite, zolpidem 4-phenyl carboxylic acid (ZCA) from urine.  Zolpidem (Ambien®) is the most widely prescribed insomnia treatment in the USA.  Little is known about zolpidem...

Dextromethorphan and Dextrorphan Recovery from Skeletal Tissue Investigated

The article, published in the journal Drug Testing and Analysis is titled ‘Analysis of dextromethorphan and dextrorphan in decomposed skeletal tissues by microwave assisted extraction, microplate solid-phase extraction and gas chromatography – mass-spectrometry (MAE-MPSPE-GSMS)’, DOI: 10.1002/dta.1754. Dextromethorphan is an antitussive compound that has abuse...

Petrarch® Silanes from UCT Specialties Used for QuEChERS Products Research Investigation

Different sorbents were deposited on dispersive solid-phase extraction silica.  Poly (methyloctadecylsiloxane) (PMODS), poly (methyloctylsiloxane) (PMOS), aminopropyl-terminated poly(dimethylsiloxane) (APPS) and a copolymer of (52 – 48%) dimethyl-(48 – 52%) methylphenyl-siloxane (DMMPS).  The PMODS, PMOS and APPS materials were obtained from UCT...

Petrarch® Specialties Bio-Conext Material Used in Isolating Strains of Con A and E. Coli

The aldehyde-coated slides were prepared by adding glass slides to a 2 mM of UCT PSX1050 in toluene for 4 hours.  The slides were removed from the solution, rinsed with toluene and dried in nitrogen.  Solutions of lectin were prepared...

Endcapped C18 Helps Researchers Achieve Excellent Analyte Sensitivity and Recovery for 131 Drug Residues in Bovine Muscle

The article, titled “Validation of a streamlined multiclass, multiresidue method for determination of veterinary drug residues in bovine muscle by liquid chromatography-tandem mass spectrometry” (DOI: 10.1007/s00216-014-8386-3) uses a d-SPE technique for the extraction of 131 veterinary drug residues in bovine muscle...

CLEAN SCREEN® THC SPE Columns Used for the Extraction of 37 Synthetic Cannabinoid Metabolites

In the method the authors used UCT’s CLEAN SCREEN® THC solid phase extraction (SPE) cartridges for the extraction of the cannabinoid metabolites from urine samples.  The SPE extractions helped researchers achieve LOD’s ranging from 0.1 to 1ng/mL, matrix effects biases ranging...