Strubi-Vuillaume I.,UF 8832 Biochimie Automatisee |
Carlier V.,UF 8832 Biochimie Automatisee |
Obeuf C.,UF 8832 Biochimie Automatisee |
Vasseur F.,University of Lille Nord de France |
And 7 more authors.
Annals of Clinical Biochemistry | Year: 2016
Background: Use of a hospital pneumatic tube system may be associated with measurement errors. Methods: A venous blood sample was collected from 79 patients into a pair of lithium heparin tubes; one tube was sent to the laboratory by porter and the other was sent via the pneumatic tube system. Plasma lactate dehydrogenase concentrations were then assayed. Results: Lactate dehydrogenase concentrations were overestimated (median bias: 18.8%) when evacuated vacuum lithium heparin tubes were sent by pneumatic tube system. This bias was reduced by bubble-wrapping the standard lithium heparin tube or using Monovette lithium heparin tubes in aspiration mode (median bias: +8.7% and −0.3%, respectively). Conclusions: Cushioning and aspiration-mode sampling may limit pneumatic tube system-associated overestimation of lactate dehydrogenase concentrations. © 2015, The Author(s) 2015. Source