Department of Biochemistry and Immunology, Lillebaelt Hospital, University Hospital of Southern Denmark, Vejle, Denmark.
Department of Regional Health Research, University of Southern Denmark, Vejle, Denmark.
Clin Chem Lab Med. 2020 Nov 23;59(5):905-911. doi: 10.1515/cclm-2020-1198. Print 2021 Apr 27.
Pneumatic tube transportation of samples is an effective way of reducing turn-around-time, but evidence of the effect of pneumatic tube transportation on urine samples is lacking. We thus wished to investigate the effect of pneumatic tube transportation on various components in urine, in order to determine if pneumatic tube transportation of these samples is feasible.
One-hundred fresh urine samples were collected in outpatient clinics and partitioned with one partition being carried by courier to the laboratory, while the other was sent by pneumatic tube system (Tempus600). Both partitions were then analysed for soluble components and particles, and the resulting mean difference and limits of agreement were calculated.
Albumin, urea nitrogen, creatinine, protein and squamous epithelial cells were unaffected by transportation in the Tempus600 system, while bacteria, renal tubular epithelial cells, white blood cells and red blood cells were affected and potassium and sodium may have been affected.
Though pneumatic tube transportation did affect some of the investigated components, in most cases the changes induced were clinically acceptable, and hence samples could be safely transported by the Tempus600 pneumatic tube system. For bacteria, white blood cells and red blood cells local quality demands will determine if pneumatic tube transportation is appropriate.
样本的气动输送是减少周转时间的有效方法，但缺乏气动输送对尿液样本影响的证据。因此，我们希望研究气动输送对尿液中各种成分的影响，以确定这些样本是否可以通过气动输送进行运输。
在门诊采集了 100 份新鲜尿液样本，其中一份由快递员送到实验室，另一份通过气动输送系统（Tempus600）发送。然后对两个样本进行可溶性成分和颗粒的分析，并计算出平均差异和一致性界限。
白蛋白、尿素氮、肌酐、蛋白质和鳞状上皮细胞不受 Tempus600 系统输送的影响，而细菌、肾小管上皮细胞、白细胞和红细胞受到影响，钾和钠可能也受到影响。
尽管气动输送确实会影响一些被调查的成分，但在大多数情况下，所引起的变化在临床上是可以接受的，因此可以通过 Tempus600 气动输送系统安全地运输样本。对于细菌、白细胞和红细胞，局部质量要求将决定是否适合气动输送。
