LearnTransfusion Series

Seven-Day Platelets: Change in Testing Algorithm and Impact on Positivity Rates

November 13, 2018 | 12:00PM to 1:00PM (EDT)



Dr. Sandra Ramirez-Arcos, Development Scientist, Centre for Innovation, Canadian Blood Services


1.  Describe the differences between the bacterial testing algorithms for 5-day and 7-day platelets.

2.  Discuss changes in positivity rates of bacterial contamination post-implementation of 7-day platelets.


1.  Residual risk of bacterial contamination of platelets: six years of experience with sterility testing.  Ramirez-Arcos S, DiFranco C, McIntyre T, Goldman M.  Transfusion. 2017 Sep;57(9):2174-2181. doi:10.1111/trf.14202. Epub 2017 Jun 26.  PMID 28653472

2.  Bacterial screening of platelet components by National Health Service Blood and Transplant, an effective risk reduction measure.  McDonald C, Allen J, Brailsford S, Roy A, Ball J, Moule R, Vasconcelos M, Morrison R, Pitt T.  Transfusion. 2017 May;57(5):1122-1131.  doi:10.1111/trf.14085.  PMID: 28425610


Note:  The session is a self-approved group learning activity (Section 1) as defined by the Maintenance of Certification program of The Royal College of Physicians and Surgeons of Canada.


To register for the event visit LearnTransfusion series.
The LearnTransfusion series is the seminar component of the Areas of Focused Competency (AFC)-Diploma Program in Transfusion Medicine. The series, organized by Canadian Blood Services is also open to all practitioners in the field of Transfusion Medicine. Through a series of regular webinars, trainees and practitioners are exposed to various scientific, technical and clinical aspects of transfusion medicine.