janet Posted September 20, 2014 Share Posted September 20, 2014 Left out 3 hours then refrozen -do we need to recollect? Link to comment Share on other sites More sharing options...
SMILLER Posted September 21, 2014 Share Posted September 21, 2014 I guess you have to check the manufacturer's insert istructions. Ours says only to "thaw rapidly" and to refer to CLSI standard H21-A5. If I am not mistaken, the problem comes if you are running a clot-based test -- fibrinogen degrades with every freeze-thaw cycle, and there is something about cold-activation of factor VII. Our PC test is a clot test, so we would not want to run anything re-frozen. Our Free PS is a latex test, so I would think its not an issue there. Scott Link to comment Share on other sites More sharing options...
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