Diagnosis of suspected inherited platelet function disorders: results of a worldwide survey

Research output: Contribution to journalArticlepeer-review


  • P Gresele
  • L Bury
  • E Falcinelli
  • C Gachet
  • C P Hayward
  • D Kenny
  • D Mezzano
  • A D Mumford
  • D Nugent
  • A T Nurden
  • S Orsini
  • M Cattaneo

Colleges, School and Institutes


BACKGROUND: Diagnosis of inherited platelet function disorders (IPFDs) is important for appropriate management and to improve epidemiologic and clinical knowledge. However, there remains a lack of consensus on the diagnostic approach.

OBJECTIVES: To gain knowledge on the current practices for the diagnosis of IPFD worldwide.

METHODS: A 67-item questionnaire was distributed to the ISTH members and to the members of several national hemostasis and thrombosis societies.

RESULTS: A total of 202 laboratories from 37 countries participated in the survey. The most frequent criterion to define patients with a suspected IPFD was a history of mucocutaneous bleeding and no acquired cause, but heterogeneity on the identification criteria was evident. Only 64.5% of respondents performed a direct clinical interview. On average, each laboratory studied 72 patients per year. The most commonly used laboratory equipment were the light-transmission aggregometer, the Platelet Function Analyzer-100, and the flow cytometer. Screening tests were platelet count, peripheral blood smear, light-transmission aggregometry, and Platelet Function Analyzer-100. Second-step tests were flow cytometry, molecular genetic analysis, and electron microscopy. Methodologies varied widely. In total, ~ 14,000 patients were investigated yearly and 60% turned out to not have a defect. Of the remaining 40%, only 8.7% received a diagnosis at a molecular level.

CONCLUSIONS: Many laboratories worldwide are involved in the diagnosis of IPFD. A large fraction of the patients studied remain without a diagnosis. A high variability in the diagnostic approaches is evident.

Bibliographic note

© 2014 International Society on Thrombosis and Haemostasis.


Original languageEnglish
Pages (from-to)1562-9
Number of pages8
JournalJournal of thrombosis and haemostasis : JTH
Issue number9
Publication statusPublished - Sep 2014


  • Blood Platelet Disorders, Blood Platelets, Cardiology, Clinical Laboratory Techniques, Flow Cytometry, Humans, International Cooperation, Microscopy, Electron, Platelet Activation, Platelet Aggregation, Platelet Count, Platelet Function Tests, Questionnaires, Societies, Medical