Works by Hayes, Eugene D

Results: 12

Systematic web monitoring of drug test subversion strategies in the United States.

Published in:

Drug Testing & Analysis, 2025, v. 17, n. 1, p. 34, doi. 10.1002/dta.3671

By:

Grabenauer, Megan;
Vikingsson, Svante;
Olson, Richard A.;
Lyons, Faith E.;
Davis, Lisa S.;
Hayes, Eugene D.;
Flegel, Ronald R.

Publication type:

Article

Δ9-Tetrahydrocannabinol and 11-hydroxy-Δ9-tetrahydrocannabinol as markers of cannabis use in urinary drug testing.

Published in:

Journal of Analytical Toxicology, 2024, v. 48, n. 9, p. 710, doi. 10.1093/jat/bkae070

By:

Vikingsson, Svante;
Winecker, Ruth E;
Cone, Edward J;
Kuntz, David J;
Hayes, Eugene D;
Flegel, Ronald R;
Davis, Lisa S

Publication type:

Article

Fentanyl as a marker of illicit drug use in morphine-positive urine specimens from workplace drug testing.

Published in:

Journal of Analytical Toxicology, 2024, v. 48, n. 3, p. 185, doi. 10.1093/jat/bkae003

By:

Vikingsson, Svante;
Winecker, Ruth E;
Kuntz, David J;
Clark, Michael;
Jacques, Martin;
Hart, E Dale;
Hayes, Eugene D;
Flegel, Ronald R;
Davis, Lisa S

Publication type:

Article

Prevalence of ∆8-tetrahydrocannabinol carboxylic acid in workplace drug testing.

Published in:

Journal of Analytical Toxicology, 2023, n. 8, p. 719, doi. 10.1093/jat/bkad068

By:

Vikingsson, Svante;
Hart, E. Dale;
Winecker, Ruth E;
Cone, Edward J;
Kuntz, David J;
Clark, Michael;
Jacques, Martin;
Hayes, Eugene D;
Flegel, Ronald R

Publication type:

Article

Conversion of water-soluble CBD to ∆9-THC in synthetic gastric fluid—An unlikely cause of positive drug tests.

Published in:

2023

By:

Hart, E. Dale;
Mullen, Lawrance;
Vikingsson, Svante;
Cone, Edward J;
Winecker, Ruth E;
Hayes, Eugene D;
Flegel, Ronald R

Publication type:

Case Study

Performance of Hair Testing for Cocaine Use—Comparison of Five Laboratories Using Blind Reference Specimens.

Published in:

Journal of Analytical Toxicology, 2023, v. 47, n. 2, p. 154, doi. 10.1093/jat/bkac066

By:

Hart, E Dale;
Vikingsson, Svante;
Winecker, Ruth E;
Evans, Amy L;
Cone, Edward J;
Mitchell, John M;
Hayes, Eugene D;
Flegel, Ronald R

Publication type:

Article

Prevalence of Cannabidiol, ∆9- and ∆8-Tetrahydrocannabinol and Metabolites in Workplace Drug Testing Urine Specimens.

Published in:

Journal of Analytical Toxicology, 2022, v. 46, n. 8, p. 866, doi. 10.1093/jat/bkac013

By:

Vikingsson, Svante;
Winecker, Ruth E;
Cone, Edward J;
Kuntz, David J;
Dorsey, Brian;
Jacques, Martin;
Senter, Melanie;
Flegel, Ronald R;
Hayes, Eugene D

Publication type:

Article

Update on Urine Adulterants and Synthetic Urine Samples to Subvert Urine Drug Testing.

Published in:

Journal of Analytical Toxicology, 2022, v. 46, n. 7, p. 697, doi. 10.1093/jat/bkac029

By:

Vikingsson, Svante;
Krauss, Shannon T;
Winecker, Ruth E;
Flegel, Ronald R;
Hayes, Eugene D

Publication type:

Article

Conversion of 7-Carboxy-Cannabidiol (7-COOH-CBD) to 11-Nor-9-Carboxy-Tetrahydrocannabinol (THC-COOH) during Sample Preparation for GC–MS Analysis.

Published in:

Journal of Analytical Toxicology, 2022, v. 46, n. 5, p. 573, doi. 10.1093/jat/bkab046

By:

Hart, E Dale;
Vikingsson, Svante;
Mitchell, John M;
Winecker, Ruth E;
Flegel, Ronald;
Hayes, Eugene D

Publication type:

Article

Development of a Quantitative LC--MS-MS Assay for Codeine, Morphine, 6-Acetylmorphine, Hydrocodone, Hydromorphone, Oxycodone and Oxymorphone in Neat Oral Fluid.

Published in:

Journal of Analytical Toxicology, 2018, v. 42, n. 6, p. 392, doi. 10.1093/jat/bky021

By:

Grabenauer, Megan;
Moore, Katherine N.;
Bynum, Nichole D.;
White, Robert M.;
Mitchell, John M.;
Hayes, Eugene D.;
Flegel, Ronald

Publication type:

Article

Pharmacokinetic Characterization of 11-nor-9- carboxy-Δ9-tetrahydrocannabinol in Urine Following Acute Oral Cannabis Ingestion in Healthy Adults.

Published in:

Journal of Analytical Toxicology, 2018, v. 42, n. 4, p. 232, doi. 10.1093/jat/bkx102

By:

Schlienz, Nicolas J.;
Cone, Edward J.;
Herrmann, Evan S.;
Lembeck, Natalie A.;
Mitchell, John M.;
Bigelow, George E.;
Flegel, Ronald;
LoDico, Charles P.;
Hayes, Eugene D.;
Vandrey, Ryan

Publication type:

Article

Detection and quantification of codeine-6-glucuronide, hydromorphone-3-glucuronide, oxymorphone-3-glucuronide, morphine 3-glucuronide and morphine-6-glucuronide in human hair from opioid users by LC-MS-MS.

Published in:

Journal of Analytical Toxicology, 2018, v. 42, n. 2, p. 115, doi. 10.1093/jat/bkx086

By:

Grabenauer, Megan;
Bynum, Nichole D.;
Moore, Katherine N.;
White, Robert M.;
Mitchell, John M.;
Hayes, Eugene D.;
Flegel, Ronald

Publication type:

Article

Works by Hayes, Eugene D

Systematic web monitoring of drug test subversion strategies in the United States.

Δ<sup>9</sup>-Tetrahydrocannabinol and 11-hydroxy-Δ<sup>9</sup>-tetrahydrocannabinol as markers of cannabis use in urinary drug testing.

Fentanyl as a marker of illicit drug use in morphine-positive urine specimens from workplace drug testing.

Prevalence of ∆<sup>8</sup>-tetrahydrocannabinol carboxylic acid in workplace drug testing.

Conversion of water-soluble CBD to ∆<sup>9</sup>-THC in synthetic gastric fluid—An unlikely cause of positive drug tests.

Performance of Hair Testing for Cocaine Use—Comparison of Five Laboratories Using Blind Reference Specimens.

Prevalence of Cannabidiol, ∆9- and ∆8-Tetrahydrocannabinol and Metabolites in Workplace Drug Testing Urine Specimens.

Update on Urine Adulterants and Synthetic Urine Samples to Subvert Urine Drug Testing.

Conversion of 7-Carboxy-Cannabidiol (7-COOH-CBD) to 11-Nor-9-Carboxy-Tetrahydrocannabinol (THC-COOH) during Sample Preparation for GC–MS Analysis.

Development of a Quantitative LC--MS-MS Assay for Codeine, Morphine, 6-Acetylmorphine, Hydrocodone, Hydromorphone, Oxycodone and Oxymorphone in Neat Oral Fluid.

Pharmacokinetic Characterization of 11-nor-9- carboxy-Δ<sup>9</sup>-tetrahydrocannabinol in Urine Following Acute Oral Cannabis Ingestion in Healthy Adults.

Detection and quantification of codeine-6-glucuronide, hydromorphone-3-glucuronide, oxymorphone-3-glucuronide, morphine 3-glucuronide and morphine-6-glucuronide in human hair from opioid users by LC-MS-MS.