Leading Edge 2022 Issue 2

www.alphalabs.co.uk 9 Stability of Unprocessed Samples Another stability study was conducted on unprocessed EDTA whole blood samples, to assess the stability of the samples at 2-8C and 28C for 0 to 4 days, before performing the Flow CAST assay. Again, a decay over time of a maximum 20% was accepted to be stable. The study revealed that EDTA whole blood samples stored at 2-8C were within the 80% recovery criteria for day 1 and day 2 (Figure D); and that EDTA whole blood samples stored at 28C leads to a drop below the 80% recovery criteria on day 2 (Figure E). Continued on next page...

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