Related Experiment Video
Updated: Aug 25, 2026

Dried Blood Spots - Preparing and Processing for Use in Immunoassays and in Molecular Techniques
Published on: March 13, 2015
Proceedings of a consensus conference: the screening of blood donors for variant CJD
Morris A Blajchman1, Mindy Goldman, Kathryn E Webert
1Canadian Blood Services, Hamilton, Ontario, Canada. Blajchma@mcmaster.ca
Insights
Variant Creutzfeldt-Jakob disease (vCJD) poses a risk for transfusion transmission. Experts convened to establish principles for implementing blood donor screening to prevent vCJD spread.
Area of Science:
- Transfusion Medicine
- Neurology
- Epidemiology
Background:
- Variant Creutzfeldt-Jakob disease (vCJD) identified in 1996 presents a risk for transfusion transmission.
- Bovine spongiform encephalopathy (BSE) and vCJD share a biological link, necessitating disease prevention strategies.
Framework:
- International experts convened to discuss and establish guiding principles for vCJD screening of blood donors.
- Consensus conference addressed scientific, biological, epidemiological, ethical, and legal aspects of vCJD testing.
Implementation:
- Development of laboratory-based approaches for vCJD screening of blood donors is ongoing.
- Implementation of vCJD testing requires careful consideration of diagnostic test availability and associated issues.
Implications:
- Screening blood donors for vCJD is crucial for preventing transfusion transmission.
- The contentious issue impacts transfusion medicine globally and recipients of blood components.
Abstract:
Since the identification, in 1996, of the first case of variant Creutzfeldt-Jakob disease (vCJD) in humans various approaches have been implemented and/or proposed to prevent this disease from being transfusion transmitted. In addition, a variety of possible laboratory-based approaches have been developed and will continue to be developed for the vCJD screening of blood donors. Various issues related to the implementation of such vCJD testing is likely to assume greater importance as diagnostic tests for vCJD becomes available for the potential screening of blood donors. The purpose of this Consensus Conference was to bring together international experts in an effort to determine which principles should guide the introduction of such testing. These experts provided the scientific and biological background of bovine spongiform encephalopathy (BSE) and vCJD, an understanding of their current epidemiology, as well as the ethical and legal issues that would impact on the implementation of a screening test for preventing the transfusion transmission of vCJD. This contentious issue is of potential considerable importance to transfusion medicine personnel worldwide, as well as to future recipients of allogeneic blood components.
Related Concept Videos
Blood Transfusion and Agglutination
History
The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
Blood Typing
Antigens are protein molecules that reside on the surface of red blood cells (RBCs). The ABO and Rh blood typing systems target antigens A,...
Blood Transfusion
Blood Transfusion Overview
A blood transfusion is a medical procedure used to replace blood lost due to injury, surgery, or to treat conditions such as anemia or cancer. During a transfusion, donor blood is...
Pre-Procedural Guidelines for Assessing Blood Pressure
Blood Studies for Cardiovascular System I: Cardiac Biomarkers
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
Blood Types
ABO blood group
ABO antigens are glycoproteins encoded by genes present on...

