Application Notes & Papers

An Alternative Sample Preparation for Prescription and Designer Benzodiazepines from Urine Using RefineTM Ultra-Filtration

A QuEChERS-Based Approach for Extracting Prescription and Designer Benzodiazepines from Blood and Urine

Extraction of Prescription and Designer Benzodiazepines Using Clean Screen® BNZ

Implementation of EPA Method 8270E Using Solid-Phase Extraction and Hydrogen as Carrier Gas for GC/MS Analysis

Determination of 6PPD-Quinone & Alternative PPD-Quinones in Fish Tissue Using QuEChERS with Serial Push-Thru Cartridge Cleanup

The Analysis of Tianeptine by Reverse-Phase SPE and LC-MS/MS

Draft Method 1634: Determination of 6PPD-Quinone in Aqueous Matrices Using Solid Phase Extraction & Liquid Chromatography with Tandem Mass Spectrometry (LC/MS/MS)

THC From Oral Fluids For GC/MS Analysis Using: 200 mg Clean Screen® DAU Extraction Column

Analysis of Synthetic Cathinones from Blood and Urine Using Clean Screen® XCEL I on LC-MS/MS

Determination of the 11 Fourth Unregulated Contaminant Monitoring Rule (UCMR4) Compounds by EPA Method 525.3

Extraction of Bentazone and Acifluorfen from Solid Matrices Using C18 SPE with GC/MS Analysis

Determination of Carbendazim in Orange Juice Using QuEChERS with LC/MS/MS Detection

Polycyclic Aromatic Hydrocarbons from a Water Matrix

LC/MS Method For Extracting Ethyl Glucuronides From Urine Using: 200 mg Clean Screen® Extraction Column

Vitamin D and Metabolites Confirmations Using: 200 mg Clean Screen® Vitamin D Extraction Column

LSD and Metabolites In Blood, Plasma/ Serum, and Urine Using: 200 mg Clean Screen® Extraction Column

Quetiapine In Blood, Plasma/Serum, Urine And Tissue Using: 200 mg Clean Screen® Extraction Column

Propoxyphene and Norpropoxyphene In Blood, Plasma/Serum, Urine, Tissue By LC-MS/MS or GC-MS Using: 200 mg Clean Screen® DAU Extraction Column

Tacrolimus, Cyclosporin, and Rapamycin In Whole Blood Using: 30 mg STYRE SCREEN® Extraction Column

Olanzapine In Whole Blood Using: 300 mg Clean-Up® Extraction Column

Gabapentin In Whole Blood, Serum/ Plasma LC-MS/MS Confirmations Using: 200 mg CS DAU Extraction Column

Sertraline and Desmethylsertraline In Blood, Plasma/Serum For HPLC Analysis Using: 200 mg Clean Screen® Extraction Column

Propoxyphene In Blood, Plasma/Serum, Urine, and Tissue For GC Or GC/MS Confirmations Using 200 mg Clean Screen® Extraction Column

Dextromethorphan and Phencyclidine in Whole Blood and Urine LC-MS/MS Confirmations Using 200 mg Clean Screen® DAU Extraction Column

Benzodiazepine Screen: Blood, Serum, Urine and Tissue For GC-GC/MS Using: 200 mg Clean Screen® BNZ Extraction Column

Simultaneous Analysis of 19 Novel Synthetic Cannabinoids in Urine Using SPE and LC-MS/MS

Analysis of Δ8 and Δ9-THC Metabolites and Other Cannabinoids in Urine

EPA Method 8081/8082

Enhanced LC-MS/MS Separation of Δ8 and Δ9 -THC Metabolites and Other Cannabinoids Extracted from Urine Samples using a Polymeric SPE Column

Analysis of Xylazine, Opioids, and Other Common Adulterants in Blood and Urine by SPE and LC-MS/MS

Cocaine & Benzoylecgonine In Oral Fluid For GC/MS Analysis Using: 50 mg Clean Screen® DAU Extraction Column

Forensic E-book

Amphetamines In Blood, Plasma/Serum, Urine, Or Tissue Using Clean Screen® DAU SPE And LC-MS/MS Analysis

EPA Method 1633: Analysis of Per- and Polyfluoroalkyl Substances (PFAS) in Aqueous Samples by Solid-Phase Extraction and LC-MS/MS

Psilocin In Urine For GC Or GC/MS Confirmations Using: 200 mg Clean Screen® Extraction Column

Simultaneous Analysis of Free Steroids and Sulfate Conjugates by Solid-Phase Extraction and LC-MS/MS

Solid Phase Extraction of Novel Synthetic 2-Benzylbenzimidazole Opioid Compounds “Nitazenes”

Analysis of Natural Cannabinoids and Metabolites from Blood Using Clean Screen® THC and SelectraCore® C18 Column on LC-MS/MS

Analysis of Natural Cannabinoids and Metabolites from Urine Using Styre Screen® HLB and SelectraCore® C18 Column on LC-MS/MS

Determination of Semi-volatile Organic Compounds in Water using Solid-Phase Extraction (SPE) and GC/MS

EPA Method 533: Determination of Per- and Polyfluoroalkyl Substances in Drinking Water via Anion-Exchange SPE and LC-MS/MS

Comprehensive Screen of Acidic/Neutral/Basic Drugs from Urine and Plasma using Micro-Prep® MMCX Extraction Plate & Analysis on LC-MS/MS

Comprehensive Screen of Acidic/Neutral/Basic Drugs from Urine and Plasma using Micro-Prep® HLB Extraction Plate & Analysis on LC-MS/MS

Analysis of 26 Natural and Synthetic Opioids in Blood and Urine Using Clean Screen® DAU SPE and a Selectra® DA UHPLC Column

Analysis of Mitragynine and 7-Hydroxymitragynine in Blood and Urine Using CLEAN-SCREEN XCEL® I and UHPLC-MS/MS

Improved Hydrocarbon Fractionation Using a Novel Silver-Phase SPE Sorbent

Analysis of Chloroquine, Hydroxychloroquine and Desethylchloroquine in Urine Using SPE and LC-MS/MS

Screening method for Barbiturates, Benzodiazepines and THC in Oral Fluid by LC-MS/MS using Styre Screen® HLD SPE Column

Summary of FDA Method C-010.01: Determination of 16 Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS) in Food using Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

Rugged Isocratic LC-UV Method for the Analysis of 16 Cannabinoids in Hemp and Cannabis Samples

Comprehensive Screen of Acidic/Neutral/Basic Drugs from Blood and Urine Featuring a Direct Elution to Analysis Technique via LC-MS/MS

EPA Method 544: Determination of Microcystins and Nodularin in Drinking Water by SPE and LC-MS/MS Detection

UCT Clean-Up® Metal Scavenging Sorbent Table

UCT Enzymes at a Glance and Commonly Asked Questions

Analysis of Low-Level Acidic, Basic, & Neutral Drugs of Abuse in Oral Fluids via LC-MS/MS Detection

THC, THC-OH, and THC-COOH CONFIRMATIONS IN WHOLE BLOOD BY LC-MS/MS or GC-MS USING 100 mg STYRESCREEN® SSTHC

EXTRACTION OF OPIATES FROM BLOOD/PLASMA/SERUM/URINE OR TISSUE USING CLEAN SCREEN XCEL® I COLUMN

Extraction of Loperamide and N-Desmethyl Loperamide from Blood Followed by LC-MS/MS Analysis

Optimization of Sample Preparation for Pesticide Analysis in Oil-Based Cannabis Products using LipiFiltr®

Simultaneous Quantitative Analysis of Total Catecholamines and Metanephrines in Urine

Analysis of Cannabinoids in Hemp using QuEChERS Extraction, SpinFiltr™ dSPE Cleanup and LC-MS/MS Detection

Quantitative Analysis of Benzodiazepines in Whole Blood by QuEChERS and LC-MS/MS

Streamlined Method for Pesticide Residues in High-Lipid Food Samples using QuEChERS Extraction, LipiFiltr® Cleanup and UHPLC-MS/MS Analysis

Malachite Green in Seafood

Using a QuEChERS Approach for the Determination of Pesticide Residues in Soil

In-Well Hydrolysis Using UCT’s Refine™ Ultra-Filtration Technology

Extraction of Synthetic and Naturally Occurring Cannabinoids in Urine Using SPE and LC-MS/MS

Analysis of Glyphosate, Glufosinate and Metabolites Using UCT’s Enviro-Clean® Glyphosate Push-Thru Purification Cartridge

Removal of Purple Pigmentation from Cannabis using QuEChERS Extraction, ChloroFiltr® dSPE Clean-up and LC-MS/MS

Extraction of Opiates in Blood, Plasma/Serum, Urine, or Tissue Using Clean Screen® Xcel I Columns.

Analysis of Pesticide Residues, Mycotoxins & Potency in Cannabis Plant using QuEChERS Extraction, ChloroFiltr® dSPE Cleanup and LC-MS/MS Detection

Per- and Polyfluoroalkyl Substances (PFASs) in Drinking Water Using Solid-Phase Extraction and LC-MS/MS

QuEChERS Procedure for Pesticides In Rice

Determination of Ephedra Alkaloids & Synephrine in Dietary Supplements via Strong Cation-Exchange SPE and LC-MS/MS Detection

Screening Method for Acidic, Neutral and Basic Drug Analytes in Oral Fluid by LC-MS/MS Using CLEAN SCREEN® XCEL I

EPA Method 522-Determination of 1,4-Dioxane in Drinking Water by Solid Phase Extraction (SPE) and GC/MS

Analysis of Fentanyl and Designer Fentanyl Derivatives in Urine using SPE and HPLC-MS/MS

Analysis of Synthetic Opiates and Novel Analgesics in Urine using SPE and HPLC-MS/MS

Determination of 1,4-Dioxane in Drinking Water by SPE and GC/MS With Selected Ion Monitoring (SIM)*

EPA Method 608 ATP- Alternative Test Procedure for the Measurement of Organochlorine Pesticides and Polychlorinated Biphenyls in Waste Water

Analysis of 47 Pesticides in Cannabis for High-Throughput Analysis: Traditional dSPE vs. Positive Pressure dSPE in a 96 Well Plate

Fractionation of Aliphatic and Aromatic Hydrocarbons in Petroleum Extracts

An Optimized Solid Phase Extraction Procedure for EPA Method 8081 and 8082 Analytes in Water

Determination of Veterinary Drug Residues in Milk using SPE and LC-MSMS

Determination of 78 Banned or Controlled Racing Industry Drugs in Horse Urine Using SPE and LC-MS/MS

Thyroid Hormones in Serum and Plasma Using SPE Extraction and UHPLC-MS/MS Analysis

Detection of Aflatoxins in Milk at Picogram Levels Using SPE and LC-MS/MS

EPA Method 8310: Solid Phase Extraction of Polynuclear Aromatic Hydrocarbons (PAHs) in Water

EPA Method 541-Determination of Small Polar Organic Compounds in Drinking Water by Solid Phase Extraction with Activated Carbon Sorbent

Determination of Neonicotinoids in Honey by QuEChERS and UHPLC-MS/MS

Determination of 11-nor-9-Carboxy-THC in Human Urine by QuEChERS and LC-MS/MS

Clean-up Procedure for Organochlorine Pesticides and PCB Extracts Using Florisil® Columns

Determination of Ephedra Alkaloids & Synephrine by Strong Cation‐Exchange SPE and LC‐MS/MS Detection Using a Pentafluorophenylpropyl HPLC Column

Determination of Pesticides in Coffee with QuEChERS Extraction and Silica Gel SPE Cleanup

Simultaneous Determination of Prescription and Designer Benzodiazepines in Urine by SPE and LC-MS/MS

A Modified QuEChERS Approach for the Extraction of Common Prescription and Illicit Drugs from Liver Prior to LC/MS-MS Analysis

THC and THC-COOH from Oral Fluid by LC-MS/MS or GC-MS Using Styre Screen® Polymeric QAX Extraction Column

Analysis of Limonin in Citrus Juice Using QuEChERS and LC-MS/MS

EPA Method 545: Determination of Cylindrospermopsin and Anatoxin-a in Drinking Water by Aqueous Direct Injection and LC/MS/MS

EPA Method 525.3: Determination of 9 UCMR4 Contaminants in Drinking Water by SPE and GC/MS

Determination of 9 UCMR4 Contaminants by EPA Method 525.3 using SPE and GC/MS Detection

A Determination of Veterinary Drug Residues in Milk Using Polymeric SPE and UHPLC-MS/MS Analysis

Extraction of Cannabinoids in Marijuana and Edibles by QuEChERS

Comparison of SPE vs. SLE for the Quantitative Analysis of Anabolic Steroids in Serum Using LC-MS/MS

Determination of 35 Pesticides and 3 Cannabinoids in Marijuana Edibles

Benzodiazepines in Urine by LC-MS/MS using Clean Screen FASt Extraction Column

THC-COOH in Urine by LC-MS/MS using Clean Screen FASt THC Extraction Column

Basic Drugs in Urine by LC-MS using Clean Screen FASt Extraction Columns

Opiates in Urine by LC-MS/MS using Clean Screen FASt Extraction Column

THC-COOH in Urine by LC-MS/MS or GC-MS using Clean Screen XCEL II Extraction Column

THC, THC-OH & THC-COOH in Whole Blood by LC-MS or GC-MS using SSTHC Extraction Columns

Sympathomimetic Amines In Blood, Plasma/Serum, Urine, and Tissue For GC Or GC/MS Confirmations Using: 200 mg Clean Screen® Extraction Column

Psilocin and Psilocybin in Urine by LC-MS using Clean Screen DAU

Narcotics/Metabolites Panel by LC-MS/MS or GC-MS using Clean Screen DAU Extraction Column

Buprenorphine and Norbuprenorphine in Blood, Plasma/Serum, Urine, and Tissue by LC-MS/MS or GC-MS using Clean Screen DAU Extraction Column

Antidepressants in Blood, Plasma/Serum, Urine, and Tissue by LC-MS/MS or GC-MS using Clean Screen DAU Extraction Column

Carisoprodol and Meprobamate in Blood, Plasma/Serum, Urine, and Tissue by LC-MS/MS or GC-MS using Clean Screen DAU Extraction Column

Identification and Quantification of Psychedelic Phenethylamine “2C” Series using SPE and LC-MS/MS

EPA Method 8015D-Determination of Diesel Range Organics (DROs) Using SPE and GC/FID

Determination of Anabolic Steroids in Horse Urine by SPE and LC-MS/MS

Basic Analytes in Urine by LC-MS/MS Using Styre Screen® BCX

Simultaneous Quantitative Analysis of Total Catecholamines and Metanephrines in Urine Using 500 MG CLEAN UP® CCX2 and LC-MS/MS

Quantitative Analysis of EtG and EtS in Urine Using FASt® ETG and LC-MS/MS

Quantitative Analysis of EtG and EtS in Urine Using Ion Exchange SPE and LC-MS/MS

EPA Method 625.1- Determination of Bases, Neutrals and Acids by Solid Phase Extraction and GC/MS Detection

Screening Method for 121 Acidic, Neutral and Basic Drug Analytes in Plasma, Serum, Urine, or Tissue by LC-MS/MS

A Modified QuEChERS Method for the Determination of Organochlorine Pesticides in Serum

The Application of QuEChERS in the Extraction of Anabolic Steroids in Whole Blood

Determination of Pesticide Residues in Tea: An AOAC Collaborative Study

Quantitative Analysis of Anabolic Steroids in Urine using Mixed-Mode SPE and LC-MS/MS

Free Opiates and Glucuronides in Urine Extracted by Clean Screen® DAU and Analyzed by LC-MS/MS

Carisoprodol and Meprobamate in Equine Urine for GC/MS Confirmations

A Novel, Versatile Polymeric Sorbent for Solid Phase Extraction of Various Organic Compounds in Water

EPA Method 529 – Determination of Explosives in Drinking Water by Solid Phase Extraction and GC/MS Detection

Simultaneous Determination of 2- and 4-methylimidazoles in Beverages using a Simple Filter and Shoot (FASt)

Determination of Chlorophenoxyacetic Acid and Other Acidic Herbicides Using a QuEChERS Sample Preparation Approach and LC-MS/MS Analysis

Determination of Gamma Hydroxybutyrate (GHB) in Hair Samples Using Solid Phase Extraction and LC-MS/MS

Determination of Amphetamines in Urine Samples Using Solid Phase Extraction and LC-MS/MS

EPA Method 528- Determination of Phenols in Drinking Water by Solid Phase Extraction and GC/MS Detection

Determination of Pesticides in Strawberries Using QuEChERS Extraction, Quick QuEChERS Clean-up and GC/MS Detection

Determination of Hormones in Water by Solid-Phase Extraction (SPE) and Liquid Chromatography – Tandem Mass Spectrometry (LC-MS/MS)*

Determination of Phthalates Leached from Toys into Artificial Saliva

EPA Method 521-Determination of Nitrosamines in Drinking Water

EPA Method 523: Determination of Triazine Pesticides and their Degradates in Drinking Water by Gas Chromatography / Mass Spectrometry (GC/MS)

Determination of Pesticides in Red Wine by QuEChERS Extraction, Quick QuEChERS Cleanup, and LC/MS/MS Detection

QuEChERS Analysis of Miticides and Other Agrochemicals in Honey Bees, Wax or Pollen

Determination of Polycyclic Aromatic Hydrocarbons (PAHs) in Seafood Using GC/MS

Modified QuEChERS Procedure for Analysis of Bisphenol A in Canned Food Products

Determination of Anthelmintic Drug Residues in Milk Using Ultra High Performance Liquid Chromatography- Tandem Mass Spectrometry*

Analysis of Flukicides/Anthelmintics in Animal Tissue Using QuEChERS and LC-MS/MS

Pesticide Residue Analysis in Whole Milk by QuEChERS and LC-MS/MS

Determination of Pesticides in Bananas by QuEChERS and LC-MS/MS

Multi-residue Pesticide Analysis of Botanical Dietary Supplements using SPE Cleanup and GC-Triple Quadrupole MS/MS

Synthetic Cannabinoids “Spice” Drugs Confirmations LC-MS/MS and GC-MS using Clean Screen® THC SPE Column

MELAMINE IN FOOD MATERIALS USING EUBCX22Z

EURL-FV Multiresidue Method Using QuEChERS

EPA Method 537-Determination of Selected Perfluorinated Alkyl Acids in Drinking Water by Solid Phase Extraction and Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS)

EPA Method 552.1-Determination of Haloacetic Acids and Dalapon in Drinking Water by SPE and GC/ECD

Extraction of Pyrethrin and Pyrethroid Pesticides from Fish Using the QuEChERS Approach

Pesticides in Fatty Matrices Extraction

QuEChERS Pesticide Analysis for Fresh Produce

Determination of Patulin in Processed Foods Using QuEChERS Extraction and UHPLC-MS/MS Analysis

Fractionation of Aliphatic and Aromatic Hydrocarbons Using Enviro-Clean® TPH Silica

EPA Method 8330B- Analysis of Nitroaromatics, Nitramines, and Nitrate Ester Compounds-Explosive and Explosive Residue Compounds

EPA Method 535- Measurement of Chloroacetanilide and Other Acetamide Herbicide Degradates

EPA Method 506-Determination of Phthalate and Adipate Esters in Drinking Water by Liquid-Solid Extraction and Gas Chromatography with Photoionization Detection

EPA Method 525.2- Determination of Organic Compounds in Drinking Water by Liquid-Solid Extraction and Capillary Column Gas Chromatography/Mass Spectrometry

EPA Method 525.3-Semivolatile Organic Compounds In Drinking Water By Solid-Phase Extraction And Capillary Column (GC/MS)

EPA Method 553-Determination of Benzidines and Nitrogen-Containing Pesticides in Water Liquid-Solid Extraction And Reverse Phase High Performance Liquid Chromatography/Particle Beam/Mass Spectrometry

EPA Method 549.2-Determination of Diquat and Paraquat in Drinking Water by Liquid-Solid Extraction and High Performance Liquid Chromatography with Ultraviolet Detection

EPA Method 548.1-Determination of Endothall in Drinking Water by Ion-Exchange Extraction, Acid Methanol Methylation and Gas Chromatography/Mass Spectrometry

EPA Method 538: Determination of Selected Organic Contaminants in Drinking Water by Aqueous Direct Injection and LC/MS/MS

EPA Method 532-Determination of Phenylurea Compounds In Drinking Water By Solid-Phase Extraction And High Performance Liquid Chromatography With UV Detection

EPA Method 8141B- Determination of Organophosphorus Pesticides and Triazine Herbicides in Water by Solid Phase Extraction

EPA Method 8323- Solid-Phase Extraction and Determination of Organotin by Micro-Liquid Chromatography Electrospray Ion Trap MS

QuEChERS Extraction and Clean-Up of Pesticides from Olive Oil

Acrylamide by QuEChERS Extraction with LC/MS/MS Detection

Trichothecene Type A & B Analysis in Wheat and Corn Using the QuEChERS Approach

Multiresidue Analysis in Cereal Grains Using Modified QuEChERS Method with UPLC-MS/MS and GC-TOFMS

Analysis of 136 pesticides in avocado using a modified QuEChERS method with LC-MS/MS and GC-MS/MS

Analysis of Tobacco Alkaloids

Streamlined Method for the Determination of More Than 100 Veterinary Drugs in Animal Tissue Using Dispersive- SPE Clean-up and LC- MS/MS Detection

Clean-Up of Organochlorine Pesticides and PCB Extracts Using FLORISIL®

Quantitative Analysis of EtG and EtS in Urine Using Clean Screen® ETG and LC-MS/MS

Simultaneous Determination of a Panel of 22 Steroids in Urine and Serum by SPE and LC-MS/MS

Acidic/Neutral/Basic Analytes in Blood, Plasma/Serum, Urine, or Tissue by LC-MS/MS or GC-MS Clean Screen® DAU Extraction Column

Barbiturates in Blood, Plasma/Serum, Urine, Tissue by LC-MS/MS or GC-MS Clean Screen® DAU Extraction Column

Caffeine, Theophylline and Theobromine in Blood, Plasma/Serum, and Urine Using Clean Screen® DAU Extraction Column

EPA Method 8321B: Determination of Phenoxyacid Herbicides in Water by Solid Phase Extraction and LC-MS/MS Detection

Determination of Pesticide Residues in Blueberries by AOAC QuEChERS Approach and Dispersive SPE Cleanup with a Novel Sorbent ChloroFiltr®

Scaled Down EPA Methods 8270 and 625

Potency and Pesticide Content in Medical vs. Recreational Marijuana

ChloroFiltr: A Novel Sorbent for Chlorophyll Removal Using QuEChERS

A Simple SPE Method for the Determination of Malachite Green, Crystal Violet and Other Synthetic Dyes in Seafood Coupled with LC-MS/MS Detection

EPA Method 1664 – Oil and Grease- Hexane Extractable Material (HEM)

Determination of Patulin in Apple Juice Using SPE and UHPLC-MS/MS Analysis

Solid Phase Extraction of Organochlorine Pesticides and PCBs by EPA Method 608.3

EPA Method 530: Determination of Selected Semivolatile Organic Chemicals in Drinking Water by SPE and GC/MS

Analysis of Neonicotinoids in Honey by QuEChERS and UHPLC-MS/MS

Scaled Down EPA Methods 8270 and 625 Solid Phase Extraction of 100 mL Samples or Less