[Histonet] Documenting control tissue source?

Joe Nocito jnocito <@t> satx.rr.com
Fri Aug 15 17:58:36 CDT 2008

CAP used to require a log of all positive control tissues. We have a book 
that lists the date, accession #, stain/immuno used, the pathologist and the 
reactivity. I just reviewed the updated CAP checklist (9/27/07) and did not 
see that question listed. I don't know if it is an oversight that it was 
omitted or if CAP deleted the question.

----- Original Message ----- 
From: "Tom McNemar" <TMcNemar <@t> lmhealth.org>
To: <histonet <@t> pathology.swmed.edu>
Sent: Friday, August 15, 2008 6:12 AM
Subject: [Histonet] Documenting control tissue source?

We are finishing up our JCAHO inspection today.  The inspector asked about 
our control tissues and where we documented the source.  We get nearly all 
of our controls from patient samples and she said that most histo labs mark 
their control blocks with the source case number.  They then keep records of 
the control source used when staining new cases.  I can see no logical 
reason to keep this info.  You use a control appropriate for the element 
being stained.  Why does it matter where the control came from?  Am I wrong? 
Do you do this?


Tom McNemar, HT(ASCP)
Histology Co-ordinator
Licking Memorial Health Systems
(740) 348-4163
(740) 348-4166
tmcnemar <@t> lmhealth.org

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