60% of floaters from the water bath? I find that really hard to believe.
The Gephardt and Zarbo CAP study from 1996 showed reported the results of a
Q-Probes study of 275 laboratories and documented a frequency of contamination
of between 0.6% and 2.9%, depending on the study method. Their study
demonstrated the rate of extraneous tissue contamination was higher for blocks
than for slides and higher in a retrospective review than in a prospective
study. So in other words, when people knew they were being studied, they were
more careful and the contamination rate went down, but in retrospect, the
majority of floaters occurred in the blocks, not the water bath.
Terri L. Braud, HT(ASCP)
Anatomic Pathology Supervisor
HNL Labs, Holy Redeemer Hospital
1648 Huntingdon Pike
Meadowbrook, PA 19046
ph: 215-938-3689
fax: 215-938-3874
Care, Comfort, and Heal
Today's Topics:
1. "Floaters" in surgical or cytology specimens
(Martha Ward-Pathology)
2. Re: "Floaters" in surgical or cytology specimens
(Joe W. Walker, Jr.)
----------------------------------------------------------------------
Message: 1
Date: Fri, 4 Dec 2020 13:55:20 +0000
From: Martha Ward-Pathology <mw...@wakehealth.edu>
To: "histonet@lists.utsouthwestern.edu"
<histonet@lists.utsouthwestern.edu>
Subject: [Histonet] "Floaters" in surgical or cytology specimens
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I am posting this question for a colleague in our Cytology department. How
often do you see floaters on surgical or cytology specimens? Obviously we
would never want to see any type of carryover but is there a standard rate
published somewhere that he can reference?
Thanks in advance for your help.
Martha Ward, MT ASCP, QIHC
Manager, Molecular Diagnostics Lab
Wake Forest Baptist Medical Center
------------------------------
Message: 2
Date: Fri, 4 Dec 2020 17:41:11 +0000
From: "Joe W. Walker, Jr." <jwwal...@rrmc.org>
To: Martha Ward-Pathology <mw...@wakehealth.edu>
Cc: "histonet@lists.utsouthwestern.edu"
<histonet@lists.utsouthwestern.edu>
Subject: Re: [Histonet] "Floaters" in surgical or cytology specimens
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Content-Type: text/plain; charset="utf-8"
https://academic.oup.com/ajcp/article/136/5/767/1766314
"Floaters represent a potential source of diagnostic error and occur in 0.01%
to 1.2% of slides. Pick up of floaters from the water bath appears most common
(?60%). Floaters in only 1 level and mismatch with the specimen tissue type are
clues to the extraneous nature of the floater."
Joe W. Walker, Jr. MS, SCT(ASCP)
Anatomical Pathology and Interim Phlebotomy Manager
Rutland Regional Medical Center
160 Allen Street, Rutland, VT 05701
P 802.747.1790 F 802.747.6525
joewal...@rrmc.org, www.rrmc.org
-----Original Message-----
From: Martha Ward-Pathology via Histonet <histonet@lists.utsouthwestern.edu>
Sent: Friday, December 4, 2020 8:55 AM
To: histonet@lists.utsouthwestern.edu
Subject: [Histonet] "Floaters" in surgical or cytology specimens
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I am posting this question for a colleague in our Cytology department. How
often do you see floaters on surgical or cytology specimens? Obviously we
would never want to see any type of carryover but is there a standard rate
published somewhere that he can reference?
Thanks in advance for your help.
Martha Ward, MT ASCP, QIHC
Manager, Molecular Diagnostics Lab
Wake Forest Baptist Medical Center
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