Tissue samples from patients can contaminate each other on their way to the histology laboratory, reports a single-hospital study that experts say reveals longstanding issues in pathology processing.
Tissue samples from patients can contaminate each other on their way to the histology laboratory, reports aExperiments implicated the practice of packing cassettes of tissue samples on racks in a shared formalin bath for transport.
The study originated soon after a hospital construction project separated the grossing room from the histology lab, locating them at opposite ends of the medical campus. To track down what had gone awry, the investigators designed an experiment to determine if the tube system was the contamination culprit. After ruling out other processing steps as sites of contamination, de-identified specimens known to be common contaminants were subjected to the routine conditions of fixation in formalin, pneumatic tube agitation, and processing.
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