What's considered a normal thyroid level for my dog or cat?

I hate to hear Tony's levels are going up. The normal range will depend on the lab that is used. I recommend to call your vet and ask these questions because they know the reference range that Tony has been using this whole time. I hope this provides some guidance. Please feel free to post any additional questions.

A low thyroid can be due to hypothyroidism or euthyroid sick syndrome. Euthyroid sick syndrome is where the thyroid is artificially low due to something else going on in the pet like skin issues. The thyroid level Depends on the lab they use. Usually 0.9is the low end of normal (0.7) still normal. Your vet could run a free t4 or tsh for more information and confirmation of hypothyroidism

All values in a blood test have a normal range, you can usually see the range written on the blood test results. if your blood test results do not show the normal range you can find those in the following website: http://www.2ndchance.info/normaldogandcatbloodvalues.htm

Hi. Yes, 3.9 is a Grey zone number for a kitty that age. Your veterinarian could do what's called a FreeT4 test. The free T4 test is significantly more sensitive in detecting hyperthyroidism in mildly hyperthyroid cats than either total T4 or T3 measurements. You can also just follow up with recheck as well, but both tests are best to diagnose actual hyperthyroidism. Unfortunately no, there are no safe over the counter medications or supplements that would help this. Keep following up with your veterinarian and monitor California for any abnormal signs.

The cost depends on your area and if your vet wants to run a full panel to check all the chemistries and organ functions or if they want to just check the thyroid levels. Call you vet and ask what the cost would be. If it is the first time, the vet will probably want a complete panel and these generally run $100-150. These are helpful because it gives a good baseline to compare future blood results against and can give indications of early kidney or liver disease, diabetes, and is a good indicator of overall health.

We are not in a position to prescribe medication for your pet. The results you show here are not showing enough proof for the need for thyroid medications unless she is showing very clear symptoms in which case a free t4 ft4 test should be completed. I recommend repeating in 4-6weeks to track changes. I would be more concerned about her elevated bun and creatinine which may indicate kidney disease and should be investigated with urine tests by your vet to determine the concentrating ability of the kidneys

The thyroid level can change in a month, especially if Dewey’s previous thyroid level was towards the middle of the normal range. There are also some other more specific tests that can be positive before the total thyroid hormone level increases. A few other diseases that can cause weight loss with a normal appetite include intestinal parasites, diabetes or occasionally certain types of cancer. If Dewey is continuing to lose weight I would recommend rechecking with your vet.