[Histonet] Pre-cut controls

Dana Settembre settembr <@t> umdnj.edu
Fri Sep 3 10:53:38 CDT 2004

I am with Karen.  
We pre-cut our controls.  All of them and they always work well.  We
once had an inspector ask how long we keep them, which prompted me to
keep the amount down to a months worth.
Dana Settembre
University Hospital - UMDNJ
Newark, NJ

>>> "Bauer, Karen" <Bauer.Karen <@t> mayo.edu> 9/3/2004 10:55:03 AM >>>
We cut all of our controls ahead of time and have had no problems. 
are tested before we use them and then of course are monitored when we
actually use them.  As far as I know, the Pathologists are happy with
we have and I have not had to change our way of handling controls.  

After we cut the controls, we put them in slide boxes and leave them
open to
air dry for a few hours or even overnight if cut late in the afternoon.
then place them in the cupboard and then use them when we need them.

Good Luck to you...

Karen Bauer HT(ASCP)
Histology Supervisor
Department of Pathology
Luther Hospital
Eau Claire, WI

-----Original Message-----
From: Joanne Mauger [mailto:MAUGER <@t> email.chop.edu] 
Sent: Friday, September 03, 2004 9:40 AM
To: flemons <@t> bhset.org; histonet <@t> lists.utsouthwestern.edu 
Subject: Re: [Histonet] Pre-cut controls

Some antigenicity can be lost when cut slides are stored for a long
Time varies for different antigens, and some are not effected at all.
people think refrigeration, or even freezing controls slides lengthens
storage time. I personally think that it's best to cut what you will
use in
a few months time. Trial and error.
>>> "Fran Lemons" <flemons <@t> bhset.org> 09/03/04 10:15AM >>>
Does anyone know why IHC control slides cannot be cut ahead of time? 
done it at other facilities, but I have been told it is not
here, without any explanation.  Any ideas?
Also, has anyone ever heard of refrigerating pre-cut IHC control
One person suggested to me that they stopped cutting them ahead of
because they were getting condensation on them & the stains wouldn't
Then she informed me that they were stored in the fridge.  Seems to me
condensation would have formed upon removing the slides from a cold
environment to a room temp.
Your thoughts/theories are appreciated.
Fran Walker
Histology Technical Specialist
ETBH Knoxville

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