Publications by authors named "Charles Mikel"

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Accurate 24-h urine cystine quantification for patients on cystine-binding thiol drugs.
Charles C Mikel, David S Goldfarb, Amy Ponte, Katherine Steigelman, Sergey Latyshev

Urolithiasis· December 2022

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Positivity rates of drugs in patients treated for opioid dependence with buprenorphine: A comparison of oral fluid and urine using paired collections and LC-MS/MS.
Robert West, Charles Mikel, Doriane Hofilena, Maria Guevara

Drug Alcohol Depend· December 2018

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Letter to the Editor Regarding a Recent Article: A Novel Chronic Opioid Monitoring Tool to Assess Prescription Drug Steady State Levels in Oral Fluid.
Charles Mikel

Pain Med· May 2018

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Detection of naltrexone and naltrexol in patients prescribed Embeda®.
Robert West, Maria Guevara, Charles Mikel

J Opioid Manag· April 2018

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Detection of Hydrocodone and Morphine as Metabolites in Oral Fluid by LC-MS/MS in Patients Prescribed Codeine.
Robert E West, Maria G Guevara, Charles Mikel, Ruben Gamez

Ther Drug Monit· February 2017

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Differentiating medicinal from illicit use in positive methamphetamine results in a pain population.
Robert West, Amadeo Pesce, Cameron West, Charles Mikel, Javier Velasco

J Anal Toxicol· March 2013

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Illicit drug use correlates with negative urine drug test results for prescribed hydrocodone, oxycodone, and morphine.
Amadeo Pesce, Cameron West, Elizabeth Gonzales, Murray Rosenthal, Robert West, Charles Mikel

Pain Physician· February 2013

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Stability of pain-related medications, metabolites, and illicit substances in urine.
Elizabeth Gonzales, Gary Ng, Amadeo Pesce, Cameron West, Robert West, Charles Mikel

Clin Chim Acta· February 2013

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3 things to consider before relying solely on point of care tests for determining benzodiazepine use in chronic pain.
Charles Mikel, Amadeo Pesce, Cameron West

Pain Physician· August 2012

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Therapeutic monitoring of benzodiazepines in the management of pain: current limitations of point of care immunoassays suggest testing by mass spectrometry to assure accuracy and improve patient safety.
Charles Mikel, Amadeo J Pesce, Murray Rosenthal, Cameron West

Clin Chim Acta· August 2012

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Improvement of pain physicians' practices of opioid management: population-based urinary excretion data.
Amadeo Pesce, Bridgit Crews, Sergey Latyshev, Charles Mikel, Perla Almazan

J Opioid Manag· February 2012

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Determination of illicit drug cutoff values in a pain patient population.
Robert West, Amadeo J Pesce, Bridgit Crews, Charles Mikel, Murray Rosenthal

Clin Chim Acta· August 2011

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Illicit drug use in the pain patient population decreases with continued drug testing.
Amadeo Pesce, Cameron West, Murray Rosenthal, Charles Mikel, Robert West

Pain Physician· July 2011

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Determination of medication cutoff values in a pain patient population.
Amadeo Pesce, Cameron West, Robert West, Bridgit Crews, Charles Mikel

J Opioid Manag· May 2011

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An improved method of determining ethanol use in a chronic pain population.
Bridgit Crews, Robert West, Ronita Gutierrez, Sergey Latyshev, Charles Mikel

J Opioid Manag· April 2011

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Improved detection of ethyl glucuronide and ethyl sulfate in a pain management population using high-throughput LC-MS/MS.
Bridgit Crews, Sergey Latyshev, Charles Mikel, Perla Almazan, Robert West

J Opioid Manag· February 2011

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Anomalous observations of hydrocodone in patients on oxycodone.
Robert West, Cameron West, Bridgit Crews, Perla Almazan, Sergey Latyshev, Charles Mikel

Clin Chim Acta· January 2011

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Reference intervals: a novel approach to detect drug abuse in a pain patient population.
Amadeo Pesce, Cameron West, Robert West, Bridgit Crews, Charles Mikel

J Opioid Manag· November 2010

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Observations of medication compliance by measurement of urinary drug concentrations in a pain management population.
Robert West, Amadeo Pesce, Cameron West, Bridgit Crews, Charles Mikel

J Opioid Manag· October 2010

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An evaluation of the diagnostic accuracy of liquid chromatography-tandem mass spectrometry versus immunoassay drug testing in pain patients.
Amadeo Pesce, Murray Rosenthal, Robert West, Cameron West, Bridgit Crews, Charles Mikel

Pain Physician· August 2010

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Marijuana correlates with use of other illicit drugs in a pain patient population.
Amadeo Pesce, Cameron West, Murray Rosenthal, Robert West, Bridgit Crews, Charles Mikel

Pain Physician· August 2010

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Comparison of clonazepam compliance by measurement of urinary concentration by immunoassay and LC-MS/MS in pain management population.
Robert West, Amadeo Pesce, Cameron West, Bridgit Crews, Charles Mikel

Pain Physician· May 2010

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A tale of two drug testing technologies: GC-MS and LC-MS/MS.
Charles Mikel, Amadeo Pesce, Cameron West

Pain Physician· May 2010

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LC-MS/MS extends the range of drug analysis in pain patients.
Charles Mikel, Perla Almazan, Robert West, Bridgit Crews, Sergey Latyshev

Ther Drug Monit· December 2009

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Anomalous observations of codeine in patients on morphine.
Robert West, Bridgit Crews, Charles Mikel, Perla Almazan, Sergey Latyshev

Ther Drug Monit· December 2009

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