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Qualification of serological infectious disease assays for the screening of samples from deceased tissue donors

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Abstract

Whilst some of the assays used for serological screening of post-mortem blood samples from deceased tissue donors in some countries have been specifically validated by the manufacturer for this purpose, a significant number of those currently in use globally have not. Although specificity has previously been considered a problem in the screening of such samples, we believe that ensuring sensitivity is more important. The aim of this study was to validate a broader range of assays for the screening of post-mortem blood samples from deceased tissue donors. Six microplate immunoassays currently in use within National Health Service Blood and Transplant (NHSBT) for the screening of blood, tissue and stem cell donations were included. Representative samples from confirmed positive donors were titrated in screen negative post-mortem samples in parallel with normal pooled negative serum to determine if there was any inhibition with the post-mortem samples. There were no significant differences seen (P < 0.005) between the dilution curves obtained for the positive samples diluted in post-mortem samples and normal pooled sera. Although small numbers of samples were studied, it can be surmised that the post-mortem blood samples from deceased tissue donors, collected according to United Kingdom guidelines, are a suitable substrate for the assays evaluated. No diminution of reactivity was seen when dilution with sera from deceased donors was compared to dilution using pooled serum from live donors. In the absence of genuine low titre positive post-mortem samples, the use of samples spiked with various levels of target material provides a means of qualifying serological screening assays used by NHSBT for the screening of post-mortem blood samples from deceased tissue donors.

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Acknowledgements

We thank NHSBT Tissue Services for providing the deceased donor samples used in this work.

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Authors and Affiliations

  1. National Transfusion Microbiology Reference Laboratory, NHS Blood and Transplant, Colindale Avenue, London, NW9 5BG, UK

    A. D. Kitchen & J. A. Newham

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  1. A. D. Kitchen
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  2. J. A. Newham
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Correspondence to A. D. Kitchen.

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Kitchen, A.D., Newham, J.A. Qualification of serological infectious disease assays for the screening of samples from deceased tissue donors. Cell Tissue Bank 12, 117–124 (2011). https://doi.org/10.1007/s10561-010-9175-7

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  • DOI: https://doi.org/10.1007/s10561-010-9175-7

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