title: [Pneumatic tube system for transport of laboratory samples: preanalytical aspects].
abstract: BACKGROUND
  A considerable proportion of laboratory errors occurs in the preanalytical phase.
  
  
  OBJECTIVE
  The aims of the authors were to study preanalytical errors in routine and emergency laboratory diagnostics in a regional clinical laboratory and evaluate the effect of the pneumatic tube system on turnaround time and laboratory results.
  
  
  METHODS
  The ratio of preanalytical errors and reasons of test rejection were analysed. In addition, the effects of pneumatic tube and manual transport on the occurrence of hemolysis and platelet activation were compared.
  
  
  RESULTS
  Using the pneumatic tube transport system, preanalytical error was below 1%. The main causes of test rejection were haemolysis in case of serum samples, and clot formation and citrate excess in anticoagulated samples. The pneumatic tube transport resulted in significantly faster sample transport, more equalized sample arrival and processing, hence the turnaround time became shorter both for routine and emergency tests.
  
  
  CONCLUSIONS
  Autovalidation and proper control of preanalytical errors are essential for rapid and reliable laboratory service supported by the pneumatic tube system for sample transport.
authors.affiliation: Debreceni Egyetem Klinikai Központ, Általános Orvostudományi Kar Laboratóriumi Medicina Intézet Debrecen Nagyerdei krt. 98. 4032.
authors.forename: Judit
authors.initials: J
authors.lastname: Tóth
authors.affiliation: Debreceni Egyetem Klinikai Központ, Általános Orvostudományi Kar Laboratóriumi Medicina Intézet Debrecen Nagyerdei krt. 98. 4032.
authors.forename: Ágota
authors.initials: Á
authors.lastname: Lenkey
authors.affiliation: Debreceni Egyetem Klinikai Központ, Általános Orvostudományi Kar Laboratóriumi Medicina Intézet Debrecen Nagyerdei krt. 98. 4032.
authors.forename: Anna
authors.initials: A
authors.lastname: V Oláh
authors.affiliation: Debreceni Egyetem Klinikai Központ, Általános Orvostudományi Kar Laboratóriumi Medicina Intézet Debrecen Nagyerdei krt. 98. 4032.
authors.forename: Julianna
authors.initials: J
authors.lastname: Köteles
authors.affiliation: Debreceni Egyetem Klinikai Központ, Általános Orvostudományi Kar Laboratóriumi Medicina Intézet Debrecen Nagyerdei krt. 98. 4032.
authors.forename: Valéria
authors.initials: V
authors.lastname: Kissné Sziráki
authors.affiliation: Debreceni Egyetem Klinikai Központ, Általános Orvostudományi Kar Laboratóriumi Medicina Intézet Debrecen Nagyerdei krt. 98. 4032.
authors.forename: Adrienne
authors.initials: A
authors.lastname: Kerényi
authors.affiliation: Debreceni Egyetem Klinikai Központ, Általános Orvostudományi Kar Laboratóriumi Medicina Intézet Debrecen Nagyerdei krt. 98. 4032.
authors.forename: János
authors.initials: J
authors.lastname: Kappelmayer
mesh_terms: D001777:Blood Coagulation; D019411:Clinical Laboratory Techniques / Q000592:standards*; D004865:Equipment and Supplies, Hospital; D006801:Humans; D007755:Laboratories, Hospital; D013048:Specimen Handling / Q000379:methods*; D013997:Time Factors
keywords: hemolysis; hemolízis; laboratory diagnostics; laboratóriumi diagnosztika; leletátfordulási idő; pneumatic tube system; pneumatikus csőpostarendszer; preanalitikai hibák; preanalytical errors; turnaround time