So do we. Martha Ward, MT (ASCP) QIHC Manager
Molecular Diagnostics Lab Medical Center Boulevard \ Winston-Salem, NC 27157 p 336.716.2109 \ f 336.716.5890 mw...@wakehealth.edu -----Original Message----- From: histonet-boun...@lists.utsouthwestern.edu [mailto:histonet-boun...@lists.utsouthwestern.edu] On Behalf Of Sebree Linda A Sent: Wednesday, April 30, 2014 8:35 AM To: 'Campbell, Tasha M.'; Terri Braud; histonet@lists.utsouthwestern.edu Subject: RE: [Histonet] Re: Negative Controls Tasha, We use the negative elements within our patient sample as our "negative tissue control". Linda A. Sebree University of Wisconsin Hospital & Clinics IHC/ISH Laboratory 600 Highland Ave. Madison, WI 53792 (608)265-6596 FAX: (608)262-7174 -----Original Message----- From: histonet-boun...@lists.utsouthwestern.edu [mailto:histonet-boun...@lists.utsouthwestern.edu] On Behalf Of Campbell, Tasha M. Sent: Wednesday, April 30, 2014 6:48 AM To: Terri Braud; histonet@lists.utsouthwestern.edu Subject: RE: [Histonet] Re: Negative Controls So this has confused me more. So before you would run a negative control for each block you were testing and you would use the negative mouse or rabbit reagent. Now you don't have to do that but you still need a negative tissue control. So what exactly does this mean? Does it mean for every antibody that you are running you need to have a negative tissue control for it? So instead of using the negative mouse serum you would run a known negative tissue control with the antibody, say CD3 or whatever it is? So are most people doing a control slide with a negative tissue and a positive tissue on it? Tasha Campbell, B.S.,HTL(ASCP) Frederick Gastroenterology Associates 310 W. 9th St. Frederick, MD 21701 301-695-6800 ext. 144 (w) 304-685-9307 (c) -----Original Message----- From: histonet-boun...@lists.utsouthwestern.edu [mailto:histonet-boun...@lists.utsouthwestern.edu] On Behalf Of Terri Braud Sent: Tuesday, April 29, 2014 1:30 PM To: histonet@lists.utsouthwestern.edu Subject: [Histonet] Re: Negative Controls On Message 7 - Negative Controls While it is true that if you run polymers, you no longer have to run a negative reagent control, HOWEVER, you still must have a negative tissue control, which to quote CAP: "must show no staining of tissues known to lack the antigen" Any of the following can serve as a negative tissue control: 1. Multi tissue blocks. These can provide simultaneous positive and negative tissue controls and are considered "best practice"... The type of negative tissue control used (i.e. separate sections, internal controls, or multitissue blocks) must be specified in the laboratory manual." Thus sayeth CAP, the almighty. Please see ANP.22570 Our lab has defined our negative controls as a piece of Uterus as the negative tissue in a multitissue block as a negative tissue control for most of our antibodies, though for a few that might be too reactive in uterus, we use a piece of skin. I hope this helps. Terri L. Braud, HT(ASCP) Anatomic Pathology Supervisor Holy Redeemer Hospital Laboratory 1648 Huntingdon Pike Meadowbrook, PA 19046 Ph: 215-938-3676 Fax: 215-938-3874 Message: 7 From: Beth Brinegar <bbrinegar...@gmail.com> Subject: [Histonet] Negative controls Hello fellow histonetters, What is are other labs doing to satisfy the ANP.22570 QC - Antibodies "Appropriate negative controls are used." ------------------------------------------------------------------------ --------- CONFIDENTIALITY NOTICE: This E-Mail is intended only for the use of the individual or entity to which it was sent. It may contain information that is privileged and/or confidential, and the use or disclosure of such information may also be restricted under applicable federal and state law. If you received this communication in error, please do not distribute any part of it or retain any copies, and delete the original E-Mail. Please notify the sender of any error by E-Mail. Thank you for your cooperation. _______________________________________________ Histonet mailing list Histonet@lists.utsouthwestern.edu http://lists.utsouthwestern.edu/mailman/listinfo/histonet _______________________________________________ Histonet mailing list Histonet@lists.utsouthwestern.edu http://lists.utsouthwestern.edu/mailman/listinfo/histonet _______________________________________________ Histonet mailing list Histonet@lists.utsouthwestern.edu http://lists.utsouthwestern.edu/mailman/listinfo/histonet _______________________________________________ Histonet mailing list Histonet@lists.utsouthwestern.edu http://lists.utsouthwestern.edu/mailman/listinfo/histonet
