[Histonet] Re: Pinning Specimen

Margaret Horne Mhorne <@t> upei.ca
Fri Apr 20 07:43:03 CDT 2012

Just another idea : I have used dental wax. Comes in a package of about
20 sheets pf pink wax, each 7.5 cm x 14.5 cm x 0.2 cm. It's a little bit
more pliable than the  waste paraffin, but not as cheap :-)  I cut it in
a long rectangle so that it sticks out of the formalin  with the tissue
at the bottom end , rather like  celery in a Bloody Caesar.      

>>> Bob Richmond <rsrichmond <@t> gmail.com> 19/04/2012 4:44 PM >>>
Karen Heckford HT ASCP CE at St. Mary's Medical Center in San Francisco

>>Does anyone know where to get specimen boards that you can pin
specimens to and then submerse in formalin? I ordered them a long time
ago and cannot remember where I got them.<<

I've solved this problem several ways. Probably the best, which has
already been mentioned, is to have blocks cast from waste paraffin, in
several sizes, and pin the specimen to them with those T-shaped steel
"map pins" and put it face down in the fixative. You can also use
cardboard or styrofoam. You may need to put a weight on top of the
pinning board. Most specimens need fixing overnight. You can ink
before or after fixation.

Most of the pathology services I've worked in do not have such pinning
arrangements and do not welcome them. Does anyone know what the
Hospital Administrator and Lab Manager's Handy-Dandy Manual for Tying
the Pathologist in Knots has to say about them? (The top-secret book
they all have in their desk drawers.)

Bob Richmond
Samurai Pathologist
Knoxville TN

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