Re: regulations

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From:Tim Morken <> (by way of histonet)
To:histonet <>
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I've never run across aany regulations pertaining to what tissues are
cut on a microtime or cryostat, whether from an animal or other human. I
am assuming the concern is contamination. If so it would be no different
than cutting two different patient's tissues on the same machine, with
or without the same knife.

Tim Morken, B.S., EMT(MSA), HTL(ASCP)
Infectious Disease Pathology
Centers for Disease Control
1600 Clifton Rd.
Atlanta, GA 30333


FAX:  (404)639-3043

----Original Message Follows----
Date: Thu, 08 Oct 1998 14:21:56 -0700
From: Ronnie Houston <>
Subject: regulations

Here's one for all you Regs buffs.

Are there any regulations that state that you cannot use a piece of
equipment for both human and research animals tissues?
The point in question, particularly, is the cryostat (although I'd be
interested in other histology equipment also).

One of our clinicians is ranting and raving about us using our CM3000 to
cut both human biopsies and animal tissues; not at the same time! This
is despite the fact that we have been doing this practice for the last
six years, and she knows this, and checked up with several pathologists
and agencies before hand. But now she knows better!
We always clean the cryostat and change the blade between tissues
anyway, whether it be different biopsies, or animal.
Thanks for any input.
Ronnie Houston
Cytochemistry & Molecular Pathoogy
Texas Scottish Rite Hospital for Chidren

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