World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
81
Citations
24150
World Ranking
16649
National Ranking
1514

Samuel J. Machin publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where Samuel J. Machin sits on this spectrum.

101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 610 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101 publications 1,796+

This scientist: 377 publications — 33rd percentile

33% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

Samuel J. Machin D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where Samuel J. Machin sits on this spectrum.

70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 399 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70 D-Index 217+

This scientist: 81 D-Index — 19th percentile

19% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

Overview

Samuel J. Machin is affiliated with University College London in the United Kingdom. Their research primarily spans the field of Medicine, with a focus on several subfields including Physiology, Hematology, Surgery, Immunology, and Oncology.

The main topics addressed in their work include clinical laboratory practices and quality control, erythropoietin and anemia treatment, hemodynamic monitoring and therapy, biosimilars and bioanalytical methods, inflammatory biomarkers in disease prognosis, as well as reliability and agreement in measurement.

Machin has contributed to multiple publications, with recent papers covering various aspects of laboratory hematology and platelet research:

  • A comparative evaluation of the CN-6000 haemostasis analyser using coagulation, amidolytic, immuno-turbidometric and light transmission aggregometry assays, 2020, International Journal of Laboratory Hematology
  • A performance evaluation of chemiluminescence enzyme immunoassays on the Sysmex CN-6500 haemostasis analyser, 2021, International Journal of Laboratory Hematology
  • Feasibility of a mean platelet volume standard: an international council for standardization in hematology (ICSH) inter-laboratory study, 2022, Platelets

Their frequent coauthors include Chris Gardiner, Philip J. Lane, Hitesh Tailor, Ian Mackie, and Katy Langley, with multiple collaborations leading to joint publications.

The venues where Machin's work is most frequently published comprise:

  • International Journal of Laboratory Hematology
  • Platelets

Best Publications

  • The "primary" antiphospholipid syndrome: major clinical and serological features.

    R A Asherson;M A Khamashta;J Ordi-Ros;R H Derksen

  • Guidelines on the diagnosis and management of thrombotic thrombocytopenic purpura and other thrombotic microangiopathies.

    Marie Scully;Beverley J. Hunt;Sylvia Benjamin;Ri Liesner

  • ARTERIAL THROMBOSIS, INTRAUTERINE DEATH AND "LUPUS" ANTICOAGULANT: DETECTION OF IMMUNOGLOBULIN INTERFERING WITH PROSTACYCLIN FORMATION

    LuisO. Carreras;SamuelJ. Machin;Rene Deman;Ghislain Defreyn

  • Clinical guidelines for testing for heritable thrombophilia

    Trevor Baglin;Elaine Gray;Mike Greaves;Beverley J. Hunt

  • Evidence-based recommendations for the prevention and long-term management of thrombosis in antiphospholipid antibody-positive patients: Report of a Task Force at the 13th International Congress on Antiphospholipid Antibodies

    G. Ruiz-Irastorza;M. J. Cuadrado;I. Ruiz-Arruza;Robin L Brey

  • A phase 2 study of the safety and efficacy of rituximab with plasma exchange in acute acquired thrombotic thrombocytopenic purpura.

    Marie Scully;Vickie McDonald;Jamie Cavenagh;Beverley J. Hunt

  • Frequency and prevention of symptomless deep-vein thrombosis in long-haul flights: a randomised trial.

    John H Scurr;Samuel J Machin;Sarah Bailey-King;Ian J Mackie

  • Guidelines on the diagnosis and management of the thrombotic microangiopathic haemolytic anaemias.

    Sarah L. Allford;Beverley J. Hunt;Peter Rose;Samuel J. Machin

  • Guidelines for the laboratory investigation of heritable disorders of platelet function.

    Paul Harrison;Ian Mackie;Andrew D Mumford;Carol Briggs

  • Assessment of an immature platelet fraction (IPF) in peripheral thrombocytopenia.

    Carol Briggs;Stefan Kunka;Dan Hart;Shinichiro Oguni

  • Rivaroxaban versus warfarin to treat patients with thrombotic antiphospholipid syndrome, with or without systemic lupus erythematosus (RAPS): a randomised, controlled, open-label, phase 2/3, non-inferiority trial

    Hannah Cohen;Hannah Cohen;Beverley J Hunt;Maria Efthymiou;Deepa R J Arachchillage

  • Regional UK TTP registry: correlation with laboratory ADAMTS 13 analysis and clinical features

    Marie Scully;Helen Yarranton;Ri Liesner;Jamie Cavenagh

  • Guidelines for testing and revised criteria for lupus anticoagulants : SSC subcommittee for the standardization of lupus anticoagulants

    Thomas Exner;Douglas A Triplett;David Taberner;Samuel J Machin

  • Guidelines on fibrinogen assays.

    Ian J. Mackie;Steven Kitchen;Samuel J. Machin;Gordon D. O. Lowe

  • Remission in acute refractory and relapsing thrombotic thrombocytopenic purpura following rituximab is associated with a reduction in IgG antibodies to ADAMTS-13.

    Marie Scully;Hannah Cohen;Jamie Cavenagh;Sylvia Benjamin

  • The international consensus group for hematology review: suggested criteria for action following automated CBC and WBC differential analysis.

    P. W. Barnes;S. L. Mcfadden;Samuel J. Machin;E. Simson

  • Increased circulating platelet-leucocyte complexes and platelet activation in patients with antiphospholipid syndrome, systemic lupus erythematosus and rheumatoid arthritis

    Joanne E. Joseph;Paul Harrison;Ian J. Mackie;David A. Isenberg

  • A Large Proportion of Patients With a Diagnosis of Essential Thrombocythemia Do Not Have a Clonal Disorder and May Be at Lower Risk of Thrombotic Complications

    Claire N. Harrison;Rosemary E. Gale;Samuel J. Machin;David C. Linch

  • Hextend, a physiologically balanced plasma expander for large volume use in major surgery: a randomized phase III clinical trial. Hextend Study Group.

    TJ Gan;E Bennett-Guerrero;B Phillips-Bute;H Wakeling

  • Continuing developments with the automated platelet count.

    C. Briggs;P. Harrison;S. J. Machin

Frequent Co-Authors

Paul J. Harrison
Paul J. Harrison University of Oxford
Flora Peyvandi
Flora Peyvandi University of Milan
Beverley J. Hunt
Beverley J. Hunt Guy's and St Thomas' NHS Foundation Trust
Claire N. Harrison
Claire N. Harrison Guy's and St Thomas' NHS Foundation Trust
David C. Linch
David C. Linch University College London
David A. Isenberg
David A. Isenberg University College London
Martin M. Brown
Martin M. Brown University College London
Munther A. Khamashta
Munther A. Khamashta King's College London
Tong J. Gan
Tong J. Gan Stony Brook University
Mervyn Singer
Mervyn Singer University College London

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Aspiring medical professionals have more flexible options than ever before, thanks to the rise of online degrees. Many students exploring healthcare paths want to know what is the fastest way to become an lpn. Fast-track LPN programs online allow for entry into healthcare in under two years, which is appealing for those seeking a quicker start in patient care.

For those looking to advance to specialized roles, pursuing the shortest pmhnp program can be a smart move. These accelerated MSN tracks in psychiatric mental health prepare nurses for high-demand fields in less time than traditional programs.

Not all medical careers involve direct patient care. If you’re interested in the administrative side, accredited online healthcare administration programs cover fundamental skills needed to manage medical facilities efficiently. These programs are flexible and affordable, making them excellent for working professionals.

Additionally, the mha degree cost is now more reasonable than ever, with many online universities offering competitive tuition and financial aid. Exploring alternative online degree pathways can help you launch a rewarding healthcare career, regardless of your preferred specialty.

Best Scientists Citing Samuel J. Machin

Trending Scientists

Recently Published Articles