title: EFS Centre-Atlantique donor's biobank: Ten years of samples usage.
abstract: BACKGROUND
  The French Establishment of Blood Centre Atlantique (EFSCA) is one of the French regional blood transfusion centers. Donor's biobank is a mandatory activity leading to the storage of biological samples taken from the blood donor. Samples of each blood donation are preserved for a 5-year period at Châteauroux in the form of two straws of 500microliters stored in liquid nitrogen. The aim of this study was to analyze the samples usage by studying quantitative, qualitative and economic criteria.
  
  
  METHODS
  We analyzed all the requests of stored blood samples from 2005 to 2014. They were coming either from the blood donor qualification laboratory (BDQL), in order to perform complementary tests, or from hemovigilance inquiry.
  
  
  RESULTS
  Among the blood donation samples, 2,144,636 (whole blood, plasma or platelets apheresis) were preserved during these ten years. During this period, 548 (0.025%) requests for samples were received; 78% were in relation with a request of the BDQL and 22% in relation with a request of hemovigilance. For the straws, the mean exit delay with regard to the blood donation date was 11.5 months (2-55). The cost of samples exit includes only working hours of a laboratory technician. On average, the annual working time dedicated to this activity was 23h. Also, the average price for one-year issuing activity was 620.31 euros.
  
  
  CONCLUSIONS
  In our study, the donor's biobank was little used. The part of hemovigilance was weak but essential for the blood safety.
authors.affiliation: EFS Centre-Atlantique Châteauroux/Bourges, Châteauroux/Bourges, France. Electronic address: thierry.sapey@efs.sante.fr.
authors.forename: T
authors.initials: T
authors.lastname: Sapey
authors.affiliation: EFS Centre-Atlantique Orléans, Orléans, France. Electronic address: Jean-yves.py@efs.sante.fr.
authors.forename: J-Y
authors.initials: JY
authors.lastname: Py
authors.affiliation: EFS Centre-Atlantique Orléans, Orléans, France. Electronic address: murielle.barnoux@efs.sante.fr.
authors.forename: M
authors.initials: M
authors.lastname: Barnoux
authors.affiliation: EFS Centre-Atlantique Châteauroux, Châteauroux, France.
authors.forename: M
authors.initials: M
authors.lastname: Tessier
authors.affiliation: EFS Centre-Atlantique Tours, Tours, France. Electronic address: frederic.dehaut@efs.sante.fr.
authors.forename: F
authors.initials: F
authors.lastname: Dehaut
mesh_terms: D018070:Biological Specimen Banks / Q000191:economics / Q000706:statistics & numerical data*; D001769:Blood; D001793:Blood Preservation / Q000191:economics / Q000706:statistics & numerical data; D058731:Blood Safety; D015925:Cryopreservation / Q000191:economics / Q000706:statistics & numerical data; D005602:France; D006801:Humans; D012189:Retrospective Studies; D065227:Transfusion Reaction
keywords: Biobank; Biobanque; Blood donations; Dons du sang; Public health; Receveur; Recipients; Santé publique; Transfusion