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Ann Clin Biochem ; 53(Pt 2): 295-7, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25911571

RESUMEN

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.


Asunto(s)
L-Lactato Deshidrogenasa/sangre , Flebotomía/métodos , Humanos , Flebotomía/instrumentación , Flebotomía/normas , Manejo de Especímenes
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