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Thread: Historical sample and Electronic Issue

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  1. #1
    Forum Member
    Join Date
    Jan 2023

    Historical sample and Electronic Issue


    I'm hoping someone can clarify the rules aroundusing historical samples and EI, I've read available guidelines but seem to be getting more confused!

    The BSH Pre-transfusion guidelines state that:
    2023-01-23 21_33_35-Guidelines for pre‐transfusion compatibility procedures in blood trans.jpg

    The addendum on pre-transfusion historical samples pre-transfusion-historical-samples-scenarios-version-_-final290115.doc ( states:

    "...the historical sample may be valid as the ‘group-check’ sample to allow issue of ABO identical red cells to meet the two sample recommendation. However, in order to meet the stringent criteria for electronic issue of blood for transfusion against the current sample, the historical group must have the same patient ID and be transmitted electronically (with no manual intervention)"

    Does the historical sample need to be fully automated with electronic transmission from the analyser to allow EI on a subsequent, current automated sample?

    On a similar note, if the historical group is via electronic import from a legacy LIMS system and all relevant patient ID checks are satisfactory, could you EI using one fully automated sample in the new LIMS?

    Thanks in advance

  2. #2
    Forum Member
    Join Date
    Mar 2018

    Where automated pre-transfusion testing and results transfer to the LIMS cannot be confirmed for the historical system then two current (valid) samples would be required. Where manual input occurred into the legacy LIMS it would be unlikely that a site would be able to demonstrate that an appropriate level of independent verification of the results input took place at the time. Electronic import from the legacy system to the new LIMS would not provide any further check on the original results. The BSH scenarios guide states that in the case of any uncertainty over the applicability of the scenarios – then default to requiring 2 samples.
    The patient UID should match across a patients history to allow for EI.



  3. #3
    Forum Member
    Join Date
    Jan 2023
    Thanks for clarifying Mike, that's really helpful.

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