World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
45
Citations
9776
World Ranking
16277
National Ranking
73

Helen G. Gika publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Helen G. Gika sits on this spectrum.

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 186 publications — 27th percentile

27% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

Helen G. Gika D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Helen G. Gika sits on this spectrum.

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 45 D-Index — 10th percentile

10% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Overview

Helen G. Gika is affiliated with Aristotle University of Thessaloniki in Greece. Their research focuses primarily on the fields of Medicine and Biochemistry, Genetics, and Molecular Biology, with significant work in various subfields including Molecular Biology, Spectroscopy, Epidemiology, Physiology, and Health, Toxicology and Mutagenesis.

Their research covers a broad range of topics within these fields, including:

  • Metabolomics and Mass Spectrometry Studies
  • Analytical Chemistry and Chromatography
  • Liver Disease Diagnosis and Treatment
  • Diet and Metabolism Studies
  • Neonatal Respiratory Health Research
  • Advanced Chemical Sensor Technologies
  • Antibiotics Pharmacokinetics and Efficacy

Helen G. Gika has contributed to scientific literature through publications in several frequent venues such as:

  • Metabolites
  • Journal of Chromatography B
  • Journal of Proteome Research
  • Journal of Chromatography A
  • International Journal of Molecular Sciences

Among their recent notable papers are:

  • Quality assurance and quality control reporting in untargeted metabolic phenotyping: mQACC recommendations for analytical quality management (2022, Metabolomics)
  • Analytical and Sample Preparation Techniques for the Determination of Food Colorants in Food Matrices (2020, Foods)
  • Emerging Biomarkers for Prediction and Early Diagnosis of Necrotizing Enterocolitis in the Era of Metabolomics and Proteomics (2020, Frontiers in Pediatrics)
  • Ensuring Fact-Based Metabolite Identification in Liquid Chromatography-Mass Spectrometry-Based Metabolomics (2023, Analytical Chemistry)
  • Current Practices in LC-MS Untargeted Metabolomics: A Scoping Review on the Use of Pooled Quality Control Samples (2023, Analytical Chemistry)

The scientist often collaborates with other researchers, with frequent co-authors including:

  • Georgios Theodoridis
  • Olga Deda
  • Olga Begou
  • Christina Virgiliou
  • Thomai Mouskeftara

Best Publications

  • Global metabolic profiling procedures for urine using UPLC-MS.

    Elizabeth J Want;Ian D Wilson;Helen Gika;Georgios Theodoridis

  • Within-Day Reproducibility of an HPLC−MS-Based Method for Metabonomic Analysis: Application to Human Urine

    Helen G. Gika;Georgios A. Theodoridis;Julia E. Wingate;Ian D. Wilson

  • Liquid chromatography-mass spectrometry based global metabolite profiling: a review.

    Georgios A. Theodoridis;Helen G. Gika;Elizabeth J. Want;Ian D. Wilson

  • Current practice of liquid chromatography-mass spectrometry in metabolomics and metabonomics.

    Helen G. Gika;Georgios A. Theodoridis;Robert S. Plumb;Ian D. Wilson

  • LC-MS-based methodology for global metabolite profiling in metabonomics/metabolomics

    Georgios Theodoridis;Georgios Theodoridis;Helen G. Gika;Helen G. Gika;Ian D. Wilson

  • Evaluation of the repeatability of ultra-performance liquid chromatography–TOF-MS for global metabolic profiling of human urine samples☆

    Helen G. Gika;Euan Macpherson;Georgios A. Theodoridis;Georgios A. Theodoridis;Ian D. Wilson

  • Hydrophilic interaction chromatography coupled to MS for metabonomic/metabolomic studies.

    Konstantina Spagou;Helen Tsoukali;Nikolaos Raikos;Helen Gika

  • Liquid chromatography and ultra-performance liquid chromatography-mass spectrometry fingerprinting of human urine: sample stability under different handling and storage conditions for metabonomics studies.

    Helen G. Gika;Georgios A. Theodoridis;Ian D. Wilson

  • Mass spectrometry‐based holistic analytical approaches for metabolite profiling in systems biology studies

    Georgios Theodoridis;Helen G. Gika;Ian D. Wilson

  • Quality assurance and quality control reporting in untargeted metabolic phenotyping: mQACC recommendations for analytical quality management

    Unknown

  • UPLC-MS-based analysis of human plasma for metabonomics using solvent precipitation or solid phase extraction.

    Filippos Michopoulos;Lindsay Lai;Helen Gika;Georgios Theodoridis

  • Untargeted LC/MS-based metabolic phenotyping (metabonomics/metabolomics): The state of the art.

    Helen Gika;Christina Virgiliou;Georgios Theodoridis;Robert S. Plumb

  • Hydrophilic interaction and reversed-phase ultra-performance liquid chromatography TOF-MS for metabonomic analysis of Zucker rat urine.

    Helen G. Gika;Georgios A. Theodoridis;Ian D. Wilson

  • (1)H NMR-based metabonomic investigation of the effect of two different exercise sessions on the metabolic fingerprint of human urine.

    Alexandros Pechlivanis;Sarantos Kostidis;Ploutarchos Saraslanidis;Anatoli Petridou

  • Quantitative profiling of polar primary metabolites using hydrophilic interaction ultrahigh performance liquid chromatography–tandem mass spectrometry

    Helen G. Gika;Georgios A. Theodoridis;Urska Vrhovsek;Fulvio Mattivi

  • LC-MS-based holistic metabolic profiling. Problems, limitations, advantages, and future perspectives.

    Helen G. Gika;Ian D. Wilson;Georgios A. Theodoridis

  • Metabolite profiling on apple volatile content based on solid phase microextraction and gas-chromatography time of flight mass spectrometry.

    Eugenio Aprea;Helen Gika;Silvia Carlin;Georgios Theodoridis

  • An overview of fecal sample preparation for global metabolic profiling.

    Olga Deda;Helen G. Gika;Ian D. Wilson;Georgios A. Theodoridis

  • Sample preparation prior to the LC–MS-based metabolomics/metabonomics of blood-derived samples

    Helen Gika;Georgios Theodoridis

  • Protocol for quality control in metabolic profiling of biological fluids by U(H)PLC-MS

    Helen G. Gika;Chrysostomi Zisi;Georgios Theodoridis;Ian D. Wilson

  • LC-MS based global metabolite profiling of grapes: solvent extraction protocol optimisation

    Georgios Theodoridis;Helen Gika;Pietro Franceschi;Lorenzo Caputi

Frequent Co-Authors

Georgios Theodoridis
Georgios Theodoridis Aristotle University of Thessaloniki
Ian D. Wilson
Ian D. Wilson Imperial College London
Fulvio Mattivi
Fulvio Mattivi University of Trento
Urska Vrhovsek
Urska Vrhovsek Fondazione Edmund Mach
Robert S. Plumb
Robert S. Plumb Waters (United States)
Anette Müllertz
Anette Müllertz University of Copenhagen
Nikolaos S. Thomaidis
Nikolaos S. Thomaidis National and Kapodistrian University of Athens
Victoria F. Samanidou
Victoria F. Samanidou Aristotle University of Thessaloniki
Emmanuel Roilides
Emmanuel Roilides Aristotle University of Thessaloniki
Georgios Arsenos
Georgios Arsenos Aristotle University of Thessaloniki

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