To the Editor,We read with interest the study by Pupek et al. about the impact of pneumatic tube system (PTS) on sample integrity and laboratory testing results. Pupek et al.  compared PTS-transported and manually-transported duplicate samples as regards routine chemistry, hematology, coagulation and blood gas test samples. Besides blood samples, PTS can also be used to transport surgical pathology biopsies. Nevertheless, albeit being widely used in many surgical pathology laboratories, the impact of a PTS transport on the sample integrity is little reported in the literature . In this letter, we intend to share our experience in validating our PTS to transport formalin-fixed and unfixed kidney biopsies for histopathological examination.The diagnosis of kidney diseases on the basis of kidney biopsies requires the examination of, on the one hand, a formalin-fixed biopsy for routine histochemical stains (e.g. in our institution hematoxylin-eosin-saffron HES) and, on the other hand, of direct immunofluorescence stains performed on the frozen sections of an unfixed biopsy sample. Whereas the sample dedicated to histochemical stains is usually immediately immerged in fixative at the time of biopsy sampling, the sample dedicated to immunofluorescence can be transported unfixed to the pathology laboratory for rapid freezing or in a
Clinical Chemistry and Laboratory Medicine (CCLM) – de Gruyter
Published: Mar 28, 2018
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