RE: [Histonet] Re: How many years you keep paraffin blocks and slides?

From:"Bernice Frederick"

After reading all these replies and being involved in research on old
blocks, I agree. We are trying to implement an agreement that if a
patient has consented to banking and research that the cases should be
flagged and if those blocks are on the edge of a retaining period, we
want them in our facility-again provided the patient has consented for
us to have their tissue. We may only end up with one block for the
initial study,but it won't last forever.

Bernice Frederick HTL (ASCP)
Northwestern University
Pathology Core Facility
710 N Fairbanks Court
Olson 8-421
Chicago,IL 60611

-----Original Message-----
[] On Behalf Of
Sent: Friday, August 03, 2007 1:18 PM
Subject: [Histonet] Re: How many years you keep paraffin blocks and

Far be it from me to encourage independent thinking, rather than blind 
compliance with regulations - but it seems to me that this issue needs
looking at 

Assuming that the dismal specialty of surgical pathology continues in
present form at all, we're clearly going to need to retain paraffin
blocks for a 
great deal longer than ten years, perhaps indefinitely.

The profusion of new molecular methods means that we're going to be
procedures as yet undreamed of on our patient's old paraffin blocks. I
think that 
the demand for such services will increase in the future.

Since liability for obstetrical problems extends to the child's
plus discovery (i.e., around twenty years) we're going to have to be
able to 
produce placental blocks and slides for that long. 

Obviously the storage problems are formidable, since paraffin blocks
temperature controlled storage, and slides are extremely heavy.
Meanwhile, as 
hospitals add ever more bureaucrats and paper pushers, the demand to 
relinquish floor space increases.

I think that the academics, the CAP, and other interested parties need
to be 
looking into this.

Bob Richmond
Samurai Pathologist
Knoxville TN

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