Related Experiment Video
Updated: Jul 23, 2026

Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
Published on: September 9, 2012
Target plasma factor levels for personalized treatment in haemophilia: a Delphi consensus statement
A Iorio1,2, E Iserman1, V Blanchette3
1Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada.
Tailored prophylactic regimens using factor concentrate can improve quality of life for severe hemophilia patients. Expert consensus defined target plasma levels for personalized hemophilia treatment strategies.
Area of Science:
- Hematology
- Bleeding Disorders
Background:
- Prophylactic factor concentrate replacement is optimal for severe hemophilia, preventing bleeds and improving life expectancy.
- Optimal prophylactic regimens remain uncertain, driving interest in patient-tailored approaches.
- Personalized prophylaxis considers bleeding phenotype, activity levels, and other patient variables.
Purpose of the Study:
- To establish consensus-based target plasma levels for factor concentrate prophylaxis in hemophilia patients.
- To guide the development of patient-tailored treatment strategies.
Main Methods:
- A modified Delphi technique involving an expert panel was employed.
- Three iterative rounds were conducted to identify targets and scenarios.
- Consensus was sought on specific target plasma levels and treatment recommendations.
Main Results:
- Twenty-eight scenarios and eight target levels for factor concentrate were identified.
- The expert panel reached consensus on numerous positive and negative recommendations.
- Areas lacking consensus were highlighted for future research.
Conclusions:
- Expert consensus successfully generated target plasma levels for tailored hemophilia treatment.
- These targets aim to optimize prophylactic factor concentrate regimens for individual patients.
Related Concept Videos
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
Clot Retraction and Fibrinolysis
Disorders of Hemostasis
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
Therapeutic Drug Monitoring: Affecting Factors
Venous Thrombosis III: Interprofessional Care

