Mad Catter Do you have the reference range for the T4 listed on the results? I don't have an actual range for US values but by calculation the US units 9.9 is SI (cdn) units 128 that's is fairly high - CDN value ref range for normal is 18-40.
Some reading for HyperT & treatment options:
http://www.veterinarypartner.com/Content.plx?P=A&A=138
On medication
http://www.veterinarypartner.com/Con...&S=0&C=0&A=510
An overall view:
http://www.2ndchance.info/hyperthyroid.htm
http://www.fabcats.org/owners/hyperthyroidism/info.html
RaId is only available in a few clinics across Canada & the US. It is expensive (cost me $1300CDN) but when you compare that to the cost of years of medication, Drs appts, blood tests for rechecking levels - it works out to be either around the same amount or cheaper.
This site is full of information on RaId - this is the clinic in Vancouver BC I went to for my grrl's treatment, it is the only thing they do
http://www.iodinecafe.com/
There is another alternative treatment for HyperT -
homeopathic remedies prescribed by a Homeopath Vet working to treat the symptoms of the whole cat not just one issue.