Effects of one directional pneumatic tube system on routine hematology and chemistry parameters; A validation study at a tertiary care hospital

摘要

Background The validation of sample stability through pneumatic tube system (PTS) is essential. The objective of this study was to evaluate the effects of PTS transportation on laboratory results. Methods Paired EDTA and SST blood samples were collected from 56 randomly selected patients. Laboratory parameters were compared between PTS group and hand-delivered group. Results No statistical differences were observed for complete blood counts, white blood cell differential parameters, erythrocyte sedimentation rate and most chemistry parameters between PTS and hand-delivered transport procedures. Mean platelet volume results obtained from samples transported through PTS were lower than that obtained from samples transported through hand-delivered method ( P = 0.001). The results of aspartate aminotransferase ( P = 0.000), lactate dehydrogenase ( P = 0.000), and hemolysis index ( P = 0.000) from PTS group were higher than that from hand-delivered group. Conclusions All laboratories should validate the stability of the results from samples according to transportation method.