Re: paraffin block storage

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We store our blocks indefinitely (now) for the reason you cited--possibly
having to run a test which may have not been available when the specimen was
processed originally.  We had been keeping them indefinitely, then changed to
a 10 year retention, and now keep them indefinitely again.  We are running
out of storage also, and may need to rent some space in the future. Keeping
tumor blocks sounds like a good idea, but perhaps keeping them all,( just in
case) might be the way to go. It can definitely pose problems either way.

Jeanne Godine

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