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The International Council for Standardization in Haematology (ICSH) was initiated as a standardization committee by the European Society of Haematology (ESH) in 1963 and officially constituted by the International Society of Hematology (ISH) and the ESH in Stockholm in 1964.

The ICSH is a not-for-profit organisation Non-Governmental Organisation that aims to achieve reliable and reproducible results in laboratory analysis in the field of diagnostic haematology.

The ICSH coordinates Working Groups of experts to examine laboratory methods and instruments for haematological analyses, to deliberate on issues of standardization and to stimulate and coordinate scientific work as necessary towards the development of international standardization materials and guidelines.


Professor Wendy Erber, MD (Syd), DPhil (Oxf), FRCPA, FRCPath

The University of Western Australia and PathWest Laboratory Medicine, Perth, Australia

Professor Gina Zini, MD

Catholic University of Sacred Heart, Rome, Italy

Dr Steve Kitchen, PhD, FIBMS

Sheffield Haemophilia and Thrombosis Centre, Sheffield Teaching Hospitals, Sheffield, UK


Dr Ian Mackie, BSc PhD FRCPath

Emeritus Reader in Haemostasis and Thrombosis Research Haematology Dept

University College London


Professor Alexander Kratz, MD, PhD, MPH
Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY, USA


Robert C. Gosselin, CLS
Hemophilia Treatment Center, University of California, Davis Health System, Sacramento, CA, USA



Dr Paul Harrison, BSc, PhD, FRCPath
University of Birmingham Medical School, Birmingham, UK



Associate Professor Cornelis Harteveld, PhD
Leiden University Medical Centre, The Netherlands



Richard McCafferty MSc, FIBMS, FACSLM
Department of Haematology, St James’s Hospital, Dublin, Ireland


Professor Amrom Obstfeld, MD, PhD
Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA, USA


ICSH Administrator

Terry Fawcett
Telephone Int +61 417 549 927
Telephone UK +44 7852 545084

ICSH Information Officer (ICO)

Steve Weston


ICSH Guideline for Internal Quality Control Policy for Haematology Cell Counters

Chair: Richard McCafferty (IRL)

ICSH Hemostasis Guidance Document on the Performance of aPTT Mixing Studies

Chair: Dorothy Adcock (USA)


Standardization of the Immature Reticulocyte Fraction

Chair: Amrom E. Obstfeld (USA)


Primary Care Point of Care testing in Haemostasis

Chair: David Fitzmaurice (UK)


ICSH Guidelines on Pre-analytic Variables in Haemostasis

Chair: Steve Kitchen (UK)


ICSH Guideline for Laboratory testing of FVIII and FIX inhibitors
Chair: Piet Meijer (NL)


ICSH Standardization of HbA2
Chair: Cornelis Harteveld (NL)


ICSH Guideline for Internal Quality Control Policy for Haematology Cell Counters
Chair: Richard McCafferty (IRL)


ICSH Guidelines for Standardization of Detection and Reporting of CD34-Positive Blasts in Bone Marrow Biopsies
Chair: Emina Torlakovic (CAN)


ICSH Guideline for the Standardization of Peripheral Blood Film Review and Reporting by Physicians
Chair: Maria Proytcheva (USA)


ICSH Guidelines for MPV Standardization
Chair: Paul Harrison (UK)


ICSH Guideline for the Extended Differential Reference Method
Chair: Brent Wood (USA)


Dr Steve Kitchen (UK), ICSH Vice-Chair, Haemostasis

Robert C. Gosselin (USA)


Dr Piet Meijer (NL)


Dr Ian Mackie (UK)


Professor Flora Peyvandi (ITA)