Prediction of blood volume to be processed to achieve a target number of CD34+ cells: Development, validation and implementation of a formula.

Background And Objectives: Calculation of blood volume (BV) to be processed to achieve the target number of CD34+ cells can be accomplished by using collection efficiency 2 (CE2) formula. Our aim was to develop a BV web formula.

Materials And Methods: We calculated CE2 from aphereses performed between January 2015 and March 2020 in allogeneic donors and patients.

Transfusion support in COVID-19 patients: Impact on hospital blood component supply during the outbreak.

Background: During the COVID-19 outbreak, most hospitals deferred elective surgical procedures to allow space for the overwhelming number of COVID-19 patient admissions, expecting a decrease in routine blood component requirements. However, because transfusion support needs of COVID-19 patients are not well known, its impact on hospital blood supply is uncertain. The objective of this study was to assess the effect of the COVID-19 pandemic on transfusion demand.