From:
dr_bruce_williams
Date: 2002-02-27 07:20:00 UTC
Subject: Re: re:adv tests-validity
--- In Ferret-Health-list@y..., "maryjo_85643" <mjo.dullum@v...>
wrote:
> I have just gotten word that the avecon tests are worthless.>
> I just need to know what to do. Should I call the vets office and
> cancel the avecon tests and ask for the United instead?
>
> Thanks for any info I can get concerning this.
Dear Mary Jo:
Typical of Internet hyperbole, the term worthless is a bit harsh, to
say the least.
Recently, there have been some conflicting results on Avecon tests on
both coasts of the US. The protocol used in the saliva and blood
test is essentially the same; however, in a large facility on the
West Coast, conflicting results were seen between the saliva and
blood Avecon tests, and between two sets of Avecon blood tests on the
same animal over a two week span.
To date, there has not been any independent efficacy studies of the
Avecon test, and most of the independent information on it comes from
the company itself. I am hopeful that they will come forward shortly
with an explanation of these problems.
With that said, I would also once again reiterate that there are TWO
tests on the market - and the CEP test available commercially through
United Vaccines (and used in the laboratories of the experts on AD)
has a long history of good consistency and independent evaluation.
It continues to be the gold standard for ADV testing, having been
used in literally hundreds of thousands of animals over the year.
The practice of confirming an Avecon saliva test with an Avecon blood
test is at best suspect at this time, as the same testing protocol is
used for both bodily fluids.
AS A MINIMUM - all suspect cases of AD should have the benefit of
both tests for confirmation. If the saliva or ELISA blood test is
more convenient for you or your vet, use it as a screen. But make
sure that all followup is done with the CEP test, and any suspicious
deaths from infected facilities should have the benefit of autopsy to
identify the presence of AD lesions in the ferret.
With kindest regards,
Bruce Williams, DVM