Journal of Pathology Informatics Journal of Pathology Informatics
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ORIGINAL ARTICLE
Year : 2018  |  Volume : 9  |  Issue : 1  |  Page : 9

Electronic p-Chip-based system for identification of glass slides and tissue cassettes in histopathology laboratories


1 PharmaSeq, Inc., Westampton, NJ, USA
2 PharmaSeq, Inc., Cytosorbents Corporation, Monmouth Junction, Westampton, NJ, USA
3 PharmaSeq, Inc., Weego-Paris Corporation, Westampton, NJ, USA
4 The University of Texas MD Anderson Cancer Center, Houston, Texas, USA

Correspondence Address:
Dr Wlodek Mandecki
PharmaSeq, Inc., 11 Deer Park Dr., Suite 104, Monmouth Jct., NJ 08852
USA
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jpi.jpi_64_17

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Background: The tagging system is based on a small, electronic, wireless, laser-light-activated microtransponder named “p-Chip.” The p-Chip is a silicon integrated circuit, the size of which is 600 μm × 600 μm × 100 μm. Each p-Chip contains a unique identification code stored within its electronic memory that can be retrieved with a custom reader. These features allow the p-Chip to be used as an unobtrusive and scarcely noticeable ID tag on glass slides and tissue cassettes. Methods: The system is comprised of p-Chip-tagged sample carriers, a dedicated benchtop p-Chip ID reader that can accommodate both objects, and an additional reader (the Wand), with an adapter for reading IDs of glass slides stored vertically in drawers. On slides, p-Chips are attached with adhesive to the center of the short edge, and on cassettes – embedded directly into the plastic. ID readout is performed by bringing the reader to the proximity of the chip. Standard histopathology laboratory protocols were used for testing. Results: Very good ID reading efficiency was observed for both glass slides and cassettes. When processed slides are stored in vertical filing drawers, p-Chips remain readable without the need to remove them from the storage location, thereby improving the speed of searches in collections. On the cassettes, the ID continues to be readable through a thin layer of paraffin. Both slides and tissue cassettes can be read with the same reader, reducing the need for redundant equipment. Conclusions: The p-Chip is stable to all chemical challenges commonly used in the histopathology laboratory, tolerates temperature extremes, and remains durable in long-term storage. The technology is compatible with laboratory information management systems software systems. The p-Chip system is very well suited for identification of glass slides and cassettes in the histopathology laboratory.


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