Michael Schäffer

899 total citations
34 papers, 628 citations indexed

About

Michael Schäffer is a scholar working on Toxicology, Pharmacology and Molecular Biology. According to data from OpenAlex, Michael Schäffer has authored 34 papers receiving a total of 628 indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Toxicology, 7 papers in Pharmacology and 6 papers in Molecular Biology. Recurrent topics in Michael Schäffer's work include Forensic Toxicology and Drug Analysis (20 papers), Alcohol Consumption and Health Effects (5 papers) and Poisoning and overdose treatments (4 papers). Michael Schäffer is often cited by papers focused on Forensic Toxicology and Drug Analysis (20 papers), Alcohol Consumption and Health Effects (5 papers) and Poisoning and overdose treatments (4 papers). Michael Schäffer collaborates with scholars based in United States, Canada and Hungary. Michael Schäffer's co-authors include Virginia Hill, Thomas Cairns, Wenlong Wang, John Irving, Robert J. Stein, G. Neil Stowe, Ning Chen, Jonathan R. Sommer, Kathryn L. Mueller and Matthew S. Thiese and has published in prestigious journals such as Analytical and Bioanalytical Chemistry, Annals of Emergency Medicine and Forensic Science International.

In The Last Decade

Michael Schäffer

34 papers receiving 530 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Michael Schäffer United States 14 391 135 101 99 92 34 628
David L. Black United States 18 354 0.9× 62 0.5× 65 0.6× 81 0.8× 47 0.5× 35 851
Małgorzata Kłys Poland 14 286 0.7× 76 0.6× 135 1.3× 31 0.3× 79 0.9× 75 555
Laureen J. Marinetti United States 12 414 1.1× 98 0.7× 157 1.6× 34 0.3× 64 0.7× 16 551
Karen S. Scott United States 17 568 1.5× 120 0.9× 175 1.7× 75 0.8× 117 1.3× 40 873
Eric S. Lavins United States 11 278 0.7× 51 0.4× 73 0.7× 35 0.4× 56 0.6× 17 390
Matteo Moretti Italy 17 270 0.7× 95 0.7× 130 1.3× 39 0.4× 53 0.6× 45 649
Jane M. Prosser United States 8 469 1.2× 127 0.9× 335 3.3× 24 0.2× 35 0.4× 14 648
Nikolas P. Lemos United States 13 251 0.6× 63 0.5× 68 0.7× 32 0.3× 23 0.3× 20 533
Hassan Z. Khiabani Norway 12 221 0.6× 51 0.4× 36 0.4× 68 0.7× 30 0.3× 20 461
Cristiana Stramesi Italy 11 306 0.8× 177 1.3× 44 0.4× 79 0.8× 61 0.7× 15 421

Countries citing papers authored by Michael Schäffer

Since Specialization
Citations

This map shows the geographic impact of Michael Schäffer's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Michael Schäffer with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Michael Schäffer more than expected).

Fields of papers citing papers by Michael Schäffer

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Michael Schäffer. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Michael Schäffer. The network helps show where Michael Schäffer may publish in the future.

Co-authorship network of co-authors of Michael Schäffer

This figure shows the co-authorship network connecting the top 25 collaborators of Michael Schäffer. A scholar is included among the top collaborators of Michael Schäffer based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Michael Schäffer. Michael Schäffer is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Hill, Virginia, et al.. (2022). Identifying contamination versus ingestion in hair testing, with cocaine as example. Drug Testing and Analysis. 14(9). 1557–1564. 1 indexed citations
2.
Hill, Virginia, et al.. (2021). Cannabinoids Tetrahydrocannabinol, Cannabinol, Cannabidiol, Tetrahydrocannabivarin and 11-nor-9-carboxy-∆9-THC in Hair. Journal of Analytical Toxicology. 46(5). 487–493. 2 indexed citations
3.
Hill, Virginia, et al.. (2020). Hydroxycocaines as Metabolic Indicators of Cocaine Ingestion. Forensic Science International. 317. 110516–110516. 6 indexed citations
4.
Hill, Virginia, Michael Schäffer, & G. Neil Stowe. (2016). Carboxy-THC in Washed Hair: Still the Reliable Indicator of Marijuana Ingestion. Journal of Analytical Toxicology. 40(5). 345–349. 16 indexed citations
5.
Schäffer, Michael, et al.. (2016). Analysis of cocaine and metabolites in hair: validation and application of measurement of hydroxycocaine metabolites as evidence of cocaine ingestion. Analytical and Bioanalytical Chemistry. 408(8). 2043–2054. 17 indexed citations
6.
Hegmann, Kurt T., Michael Weiss, Fernando G. Branco, et al.. (2014). ACOEM Practice Guidelines. Journal of Occupational and Environmental Medicine. 56(12). e143–e159. 70 indexed citations
7.
Castaneto, Marisol S., Allan J. Barnes, Karl B. Scheidweiler, et al.. (2013). Identifying Methamphetamine Exposure in Children. Therapeutic Drug Monitoring. 35(6). 823–830. 17 indexed citations
8.
Hill, Virginia, Thomas Cairns, & Michael Schäffer. (2007). Hair analysis for cocaine: Factors in laboratory contamination studies and their relevance to proficiency sample preparation and hair testing practices. Forensic Science International. 176(1). 23–33. 33 indexed citations
9.
Schäffer, Michael, Virginia Hill, & Thomas Cairns. (2005). Hair Analysis for Cocaine: The Requirement for Effective Wash Procedures and Effects of Drug Concentration and Hair Porosity in Contamination and Decontamination. Journal of Analytical Toxicology. 29(5). 319–326. 49 indexed citations
10.
11.
Cairns, Thomas, et al.. (2004). Levels of cocaine and its metabolites in washed hair of demonstrated cocaine users and workplace subjects. Forensic Science International. 145(2-3). 175–181. 51 indexed citations
12.
Cairns, Thomas, et al.. (2004). Amphetamines in washed hair of demonstrated users and workplace subjects. Forensic Science International. 145(2-3). 137–142. 35 indexed citations
13.
Cairns, Thomas, et al.. (2004). Removing and identifying drug contamination in the analysis of human hair. Forensic Science International. 145(2-3). 97–108. 92 indexed citations
14.
Schäffer, Michael, Wenlong Wang, & John Irving. (2002). An Evaluation of Two Wash Procedures for the Differentiation of External Contamination versus Ingestion in the Analysis of Human Hair Samples for Cocaine. Journal of Analytical Toxicology. 26(7). 485–488. 43 indexed citations
15.
Schäffer, Michael. (2001). Blood, sweat, serious fears. Hepatitis C puts rescue workers' lives at risk and under scrutiny.. PubMed. 130(2). 20–20. 1 indexed citations
16.
Hall, Alan H., Barry H. Rumack, Michael Schäffer, & Christopher H. Linden. (1986). Clinical toxicology of cyanide: North American clinical experiences. Annals of Emergency Medicine. 15(1). 93–94. 13 indexed citations
17.
Schäffer, Michael, et al.. (1983). The general toxicology unknown. I. The systematic approach.. PubMed. 28(2). 391–7. 10 indexed citations
18.
Schäffer, Michael, et al.. (1983). Spontaneous Live Birth with a Maternal History of Intravenous Use of Pentazocine and Tripelennamine (T's and Blues). Journal of Forensic Sciences. 28(2). 489–495. 2 indexed citations
19.
Stein, Robert J., et al.. (1982). A Purinethol (6-mercaptopurine) fatality in a case of prescription negligence: a gas chromatographic determination of 6-mercaptopurine.. PubMed. 27(2). 454–60. 2 indexed citations
20.
Schäffer, Michael, et al.. (1982). Simultaneous Quantitation of Morphine and Codeine in Biological Samples by Electron Impact Mass Fragmentography. Journal of Analytical Toxicology. 6(5). 231–234. 26 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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