Answers are grounded in this paper and cite their sources.
Errors in laboratory measurements could be derived from many pre-analytical factors. The aim of this study was to assess the influence of the hospital’s pneumatic tube system (PTS) on serum lactate dehydrogenase (LDH) and potassium. Forty-five healthy blood donors were involved. We studied LDH and potassium delivered to the laboratory by a PTS with different carrier inserts and transport times. In addition, influences of the PTS sending different types of specimens on LDH and potassium were determined. Blood specimens sent via PTS several times or without carrier inserts had statistical changes in LDH; the potassium had a slightly rising trend. Of the under-filled blood draw tubes or lithium heparin tube specimens, changes were caused by the PTS, but there were no effects on pure serum specimens. Many minor shakings derived from the transportation of the PTS inevitably influenced LDH and potassium.
No takes yet. Share an insight, caveat, or question.
Cui et al. (2009) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: