copper controls

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From:"Abrahamson, Brian" <babraham@MACNEAL.COM>
To:'Histo Net' <>
Content-Type:text/plain; charset="iso-8859-1"

Hello all, I am new to this list so please forgive me if this has been
discussed recently but I am in dire need of copper controls for our liver
stain panel.  We usually buy them from newcomer supply, (which gets them
from another source) but lately they have been out of stock and backorder
like crazy.  We have attempted to make our own but to no avail.  I have
heard that fetal liver and dog liver are good controls but our fetal liver
hasn't worked and we don't have any access to dog tissue (anymore).  Does
anyone have an idea for where to find or make or substitute a good copper
control?  We have already tried copper sulfate soaked liver to no avail.

Thanks for all your help

Brian Abrahamson

Genesis Clinical Lab
Berwyn IL USA

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