Yes--- THE EMPEROR HAS NO CLOTHES- published studies show the methods in
general do not have the capabilities many of us wish that they did.
However, the methods are the methods. Specifications/requirements are tied
to the methods (or should be). We (the pharmaceutical industry) are
required to have adequate control over microorganisms in our respective
products. If the user does not believe that they have adequate control
they should do something to achieve what they would consider adequate
control. There are provisions for using alternative methods (USP <1223>).
It should not be hard to show that a "good method" is equal to or better
than a "bad" method in detecting microbial contaminants. i.e the good
method picks up everything the bad method does and then some. There is no
method that will pick up every single contaminant or potential
contaminant. As has been pointed out repeatedly, paradigms have worked
their way into many guidelines and regulations. This took time. It will
take time to get them out.The more published information "out there"
preferably in refereed journals the more ammunition regulators and
industry have to work with. As we all know, it can take very little effort
to get a paradigm into a guideline, regulation or SOP but the proverbial
"act of God" to get it out. This is now the era of scientific proof for
methods and specifications- this proof works both directions i.e it
(method) works or it does not work. Unfortunately,saying something does
not work is not proof and cannot be acted upon.
The usual disclaimer- I speak for myself.
J. Kirby Farrington, Ph.D. (RM/SM) NRM
Research Advisor-Microbiology and Sterility Assurance
Eli Lilly Indianapolis 46285
Lilly LTC Mail Stop 5546
317-651-9620 Beep.256-2840 cell 317-430-6548
The PMFList (http://microbiol.org/PMFList_info.htm) is operated from
The Microbiology Network (http://microbiol.org) and supported by
our sponsors (http://microbiol.org/sponsor.htm) as a service to
the scientific community.
Please take a second to visit our sponsors' web sites and say thank you for their support of this service.
Accugenix - http://www.accugenix.com
American Type Culture Collection - http://www.atcc.org
ATS Laboratories - http://www.ats-labs.com
Biolog - http://www.biolog.com
Biomerieux - http://industry.biomerieux-usa.com
Dupont Qualicon - http://www.qualicon.com
EMD Chemicals - http://www.emdchemicals.com
EMSL Analytical, Inc. - http://www.emsl.com
Genomic Profiling Systems, Inc. - http://www.genprosys.com
MIDI, Inc. - http://www.midi-inc.com
Millipore - http://www.millipore.com
Pall - http://www.pall.com
NovaTek International - http://www.ntint.com
Raven Biological Labs - http://www.ravenlabs.com
Veltek Associates, Inc - http://www.sterile.com
The nature of this service is to provide a medium for communication. The specific statements and endorsements of individuals participating in the discussions are not necessarily those of The Microbiology Network, Inc., the PMF, or the sponsors of the list.