Publications

Selected publications from the lab's three areas of work. For Dr. Shover's complete list of published work, see her NCBI bibliography (linked below).

Drug Checking Los Angeles

Shover CL, Godvin ME, Appley M, et al. UV stabilizer BTMPS in the illicit fentanyl supply in 9 US locations, June to October 2024. JAMA. 2025. PMID: 39908044.

Shover CL, Koncsol AJ, Godvin ME, et al. High variation in purity of consumer-level illicit fentanyl samples in Los Angeles, 2023-2025. Int J Drug Policy. 2025;145:104977. PMID: 40886524.

Friedman JR, Molina CA, Koncsol AJ, et al. Xylazine prevalence and concentration in the Los Angeles fentanyl market, 2023 Q1-2025 Q2. Drug Alcohol Depend Rep. PMCID: PMC12320180.

Friedman JR, Molina CA, Romero R, et al. Quetiapine, a novel additive to the illicit heroin supply in Los Angeles. J Addict Med. PMID: 40709772.

Friedman JR, Godvin ME, Molina CA, et al. Fentanyl, heroin, and methamphetamine-based counterfeit pills sold at tourist-oriented pharmacies in Mexico: an ethnographic and drug checking study. Drug Alcohol Depend. 2023;249:110819. PMID: 37348270.

Sisco E, Appley MG, Pyfrom EM, et al. Beyond fentanyl test strips: investigating other urine drug test strips for drug checking applications. Forensic Chem. 2024;40:100594. PMID: 39371371.

Friedman JR, González Montoya A, Ruiz C, et al. The detection of xylazine in Tijuana, Mexico: triangulating drug checking and clinical urine testing data. J Addict Med. 2026;20(1):22-25. PMID: 40111272.

Molina CA, Friedman JR, Koncsol AJ, et al. Assessing the real-world performance of xylazine test strips for community-based drug checking in Los Angeles. Harm Reduct J. 2026. PMID: 40630564.

Godvin ME, Friedman JR, Molina CA, et al. Estimating the daily milligrams of morphine equivalent of illicit fentanyl use in Los Angeles: clinical and epidemiological implications. Drug Alcohol Depend. 2026:113224. PMID: 41890996.

LA County Overdose Surveillance (R01DA057630)

Shover CL, Davis C, Gordon S, Humphreys K. Association between medical cannabis laws and opioid overdose mortality has reversed over time. Proc Natl Acad Sci USA. 2019. PMCID: PMC6600903.

Shover CL, Falasinnu TO, Dwyer CL, et al. Steep increases in fentanyl-related mortality west of the Mississippi River. Drug Alcohol Depend. 2020. PMCID: PMC7521591.

Shover CL, Falasinnu TO, Freedman RB, Humphreys K. Emerging characteristics of isotonitazene-involved overdose deaths: a case-control study. J Addict Med. 2020. PMCID: PMC8141068.

Friedman JR, Shover CL. Charting the Fourth Wave: geographic, temporal, race/ethnicity, and demographic trends in polysubstance fentanyl overdose deaths in the United States, 2010-2021. Addiction. 2023. PMID: 37705148.

K01 Award: Medications for Opioid Use Disorder (K01DA050771)

Ross R, Rudolph K, Shover CL. Prescribing of extended release buprenorphine injection for Medicaid beneficiaries, 2018-2022. Addiction. 2024. PMCID: PMC12050076.

Complete list of published work: NCBI My Bibliography