[Histonet] DAB precipitate on H. pylori

Vanessa Perez vperez <@t> pathreflab.com
Mon Aug 20 13:10:40 CDT 2012

Are you using the ventana h. pylori?  If you are we are having that problem with some of our satellite labs.  Ventana said its an issue with that new antibody and some labs but not all are experiencing this.  Have you called it in the Customer support???

Vanessa Perez Garcia
Histology Supervisor
Pathology Reference Lab
vperez <@t> pathreflab.com

-----Original Message-----
From: histonet-bounces <@t> lists.utsouthwestern.edu [mailto:histonet-bounces <@t> lists.utsouthwestern.edu] On Behalf Of Dorothy Glass
Sent: Monday, August 20, 2012 1:13 PM
To: histonet <@t> lists.utsouthwestern.edu
Subject: [Histonet] DAB precipitate on H. pylori

I have been getting something on some slides, not all that looks like bacteria but it is not. It looks like Dab precipitate. It looks like the Dab is breaking down,  but only noticeable on the stains for H. pylori.  I wash my water bath, and changes my blades. It not occurs all the time, but it has happened about four times.  Could it be the water not being filtered properly. We have a water filtering system, but it has not been working well lately. Would that have anything to do with the brown patches on H. pylori?
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