G. Schumann

3.2k total citations
65 papers, 2.5k citations indexed

About

G. Schumann is a scholar working on Physiology, Food Science and Nephrology. According to data from OpenAlex, G. Schumann has authored 65 papers receiving a total of 2.5k indexed citations (citations by other indexed papers that have themselves been cited), including 21 papers in Physiology, 11 papers in Food Science and 10 papers in Nephrology. Recurrent topics in G. Schumann's work include Clinical Laboratory Practices and Quality Control (20 papers), Pesticide Residue Analysis and Safety (11 papers) and Renal function and acid-base balance (6 papers). G. Schumann is often cited by papers focused on Clinical Laboratory Practices and Quality Control (20 papers), Pesticide Residue Analysis and Safety (11 papers) and Renal function and acid-base balance (6 papers). G. Schumann collaborates with scholars based in Germany, Netherlands and Italy. G. Schumann's co-authors include Rainer Klauke, Raymund Zinck, Arend Bökenkamp, Johannes Brodehl, Ferruccio Ceriotti, D. J. Byrd, Mauro Panteghini, Poul J. Jørgensen, Paul Franck and F.-Javier Gella and has published in prestigious journals such as PEDIATRICS, Clinical Chemistry and Clinica Chimica Acta.

In The Last Decade

G. Schumann

64 papers receiving 2.4k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
G. Schumann Germany	24	610	481	346	324	269	65	2.5k
Bernard E. Statland United States	28	163 0.3×	509 1.1×	291 0.8×	344 1.1×	274 1.0×	96	2.1k
Claude Petitclerc Canada	23	304 0.5×	443 0.9×	404 1.2×	148 0.5×	162 0.6×	65	1.9k
D S Young United States	22	164 0.3×	400 0.8×	484 1.4×	167 0.5×	157 0.6×	58	2.3k
Rainer Haeckel Germany	29	205 0.3×	1.2k 2.4×	601 1.7×	195 0.6×	465 1.7×	164	2.7k
T. P. Whitehead United Kingdom	30	301 0.5×	437 0.9×	719 2.1×	496 1.5×	362 1.3×	113	3.6k
Vladimír Palička Czechia	28	139 0.2×	992 2.1×	708 2.0×	354 1.1×	434 1.6×	217	3.4k
Nils Tryding Sweden	22	117 0.2×	428 0.9×	694 2.0×	335 1.0×	458 1.7×	75	2.9k
Won‐Ki Min South Korea	25	167 0.3×	215 0.4×	522 1.5×	158 0.5×	317 1.2×	176	1.9k
Mogens Hørder Denmark	31	147 0.2×	649 1.3×	1.0k 3.0×	583 1.8×	827 3.1×	180	5.5k
Linda M. Thienpont Belgium	38	444 0.7×	1.2k 2.4×	997 2.9×	191 0.6×	477 1.8×	146	5.7k

Countries citing papers authored by G. Schumann

Since Specialization

Citations

This map shows the geographic impact of G. Schumann'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 G. Schumann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites G. Schumann more than expected).

Fields of papers citing papers by G. Schumann

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by G. Schumann. 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 G. Schumann. The network helps show where G. Schumann may publish in the future.

Co-authorship network of co-authors of G. Schumann

This figure shows the co-authorship network connecting the top 25 collaborators of G. Schumann. A scholar is included among the top collaborators of G. Schumann 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 G. Schumann. G. Schumann is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Klauke, Rainer, et al.. (2018). Reference measurement procedure for total bilirubin in serum re-evaluated and measurement uncertainty determined. Clinica Chimica Acta. 481. 115–120. 15 indexed citations

Schumann, G., Rainer Klauke, Francesca Canalías, et al.. (2011). IFCC primary reference procedures for the measurement of catalytic activity concentrations of enzymes at 37 °C. Part 9: Reference procedure for the measurement of catalytic concentration of alkaline phosphatase. Clinical Chemistry and Laboratory Medicine (CCLM). 49(9). 1439–46. 101 indexed citations

Lo, Stanley F., et al.. (2009). Interlaboratory comparison of the Doumas bilirubin reference method. Clinical Biochemistry. 42(12). 1328–1330. 12 indexed citations

Arzideh, Farhad, Werner Wosniok, Eberhard Gurr, et al.. (2007). A plea for intra-laboratory reference limits. Part 2. A bimodal retrospective concept for determining reference limits from intra-laboratory databases demonstrated by catalytic activity concentrations of enzymes. Clinical Chemistry and Laboratory Medicine (CCLM). 45(8). 1043–57. 81 indexed citations

Wehmeier, Michael, et al.. (2006). Evaluation and quality assessment of glucose concentration measurement in blood by point-of-care testing devices. Clinical Chemistry and Laboratory Medicine (CCLM). 44(7). 888–93. 16 indexed citations

Jansen, Rob, G. Schumann, H Baadenhuijsen, et al.. (2006). Trueness verification and traceability assessment of results from commercial systems for measurement of six enzyme activities in serum. Clinica Chimica Acta. 368(1-2). 160–167. 32 indexed citations

Kielstein, Jan T., Alexander Woywodt, G. Schumann, H. Haller, & Danilo Fliser. (2003). Efficiency of High‐Flux Hemodialysis in the Treatment of Valproic Acid Intoxication. Journal of Toxicology Clinical Toxicology. 41(6). 873–876. 26 indexed citations

Brinkmann, Thomas, J Dreier, J Diekmann, et al.. (2003). Alanine aminotransferase cut‐off values for blood donor screening using the new International Federation of Clinical Chemistry reference method at 37 °C. Vox Sanguinis. 85(3). 159–164. 9 indexed citations

Schumann, G. & Rainer Klauke. (2002). New IFCC reference procedures for the determination of catalytic activity concentrations of five enzymes in serum: preliminary upper reference limits obtained in hospitalized subjects. Clinica Chimica Acta. 327(1-2). 69–79. 220 indexed citations

10.

Schumann, G., R Bonora, Ferruccio Ceriotti, et al.. (2002). IFCC Primary Reference Procedures for the Measurement of Catalytic Activity Concentrations of Enzymes at 37°C. Part 2. Reference Procedure for the Measurement of Catalytic Concentration of Creatine Kinase. Clinical Chemistry and Laboratory Medicine (CCLM). 40(6). 635–42. 120 indexed citations

11.

Schumann, G., R Bonora, Ferruccio Ceriotti, et al.. (2002). IFCC Primary Reference Procedures for the Measurement of Catalytic Activity Concentrations of Enzymes at 37C. Part 6. Reference Procedure for the Measurement of Catalytic Concentration of γ-Glutamyltransferase. Clinical Chemistry and Laboratory Medicine (CCLM). 40(7). 97 indexed citations

12.

Schumann, G., R Bonora, Ferruccio Ceriotti, et al.. (2002). IFCC Primary Reference Procedures for the Measurement of Catalytic Activity Concentrations of Enzymes at 37°C. Part 5. Reference Procedure for the Measurement of Catalytic Concentration of Aspartate Aminotransferase. Clinical Chemistry and Laboratory Medicine (CCLM). 40(7). 725–33. 79 indexed citations

13.

Schumann, G., et al.. (2002). Die Konzentration der Carnitinfraktionen im III. Trimenon der Schwangerschaft in Abhängigkeit von der Glukosetoleranz. Zentralblatt für Gynäkologie. 124(11). 533–537. 3 indexed citations

14.

Schumann, G., D. Hellmann, Rainer Klauke, et al.. (2001). Alkaline Phosphatase Activity: New Assay for the Reflotron® System. Results of the Evaluation in Eight Clinical Laboratories. Clinical Chemistry and Laboratory Medicine (CCLM). 39(1). 71–8. 8 indexed citations

15.

Gella, F.-Javier, Ferruccio Ceriotti, Xavier Fuentes‐Arderiu, et al.. (2001). Certification of the Mass Concentration of Creatine Kinase Isoenzyme 2 (CK-MB) in the Reference Material BCR 608. Clinical Chemistry and Laboratory Medicine (CCLM). 39(9). 858–65. 3 indexed citations

16.

Panteghini, Mauro, Ferruccio Ceriotti, G. Schumann, & Lothar Siekmann. (2001). Establishing a Reference System in Clinical Enzymology. Clinical Chemistry and Laboratory Medicine (CCLM). 39(9). 795–800. 47 indexed citations

17.

Linsinger, Thomas P. J., J. Pauwels, H. Schimmel, et al.. (2000). Estimation of the uncertainty of CRMs in accordance with GUM: Application to the certification of four enzyme CRMs. Fresenius Journal of Analytical Chemistry. 368(6). 589–594. 17 indexed citations

18.

Fieguth, Armin, G. Schumann, H. Troger, & W. J. Kleemann. (1999). The effect of lethal electrical shock on postmortem serum myoglobin concentrations. Forensic Science International. 105(2). 75–82. 9 indexed citations

19.

Bökenkamp, Arend, et al.. (1998). Reference values for cystatin C serum concentrations in children. Pediatric Nephrology. 12(2). 125–129. 118 indexed citations

20.

Schumann, G., et al.. (1993). Monitoring Cyclosporin A (Ciclosporin, INN) Concentrations in Whole Blood: Evaluation of the EMIT™ Assay in Comparison with HPLC and RIA. Clinical Chemistry and Laboratory Medicine (CCLM). 31(6). 381–8. 11 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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