Urinalysis: Evaluation of a urine sample is important in any sick animal. In the case of hyperthyroidism, a urinalysis may help us to determine if changes in the kidney tests are related to dehydration or to kidney disease.
TgAb/THYROGLOBULIN ANTIBODIES If you have already been diagnosed with Graves' disease, having elevated levels of Thyroglobulin Antibodies (TgAb) means that you are more likely to eventually become hypothyroid. Thyroglobulin antibodies are positive in about 60 percent of Hashimoto's patients and 30 percent of Graves' patients.
TPO antibodies can be evidence of tissue destruction. Normal TPO Antibodies - If TPO antibodies fall within the reference range, they are considered normal. This does not entirely rule out Hashimoto's disease, but makes it less likely.
Find out where your doctor stands on this controversy. FREE T4/FREE THYROXINE Free T4/Free Thyroxine - Free T4 measures the free, unbound levels of the hormone thyroxine - the storage hormone - in your bloodstream.
Determination of fT4 involves a single blood sample that is sent to a referral laboratory. "The concentration of fT4 is less affected by factors such as concurrent illness or medications." The concentration of fT4 is less affected by factors such as concurrent illness or medications.
Excess thyroid hormone may have a direct 'toxic' effect on the liver or the increase may be related to increased blood flow through the liver resulting from the hyperthyroid state. These changes are typically mild and should resolve with treatment of the hyperthyroid condition.
These two parameters indicate how well the kidneys are filtering out metabolic waste products from the body. Increases in BUN and creatinine may be seen with kidney disease, or with dehydration or decreased blood flow to the kidneys.
Tg 0-30 ng/m Thyroid microsomal antibody titer TMAb. Varies with method Thyroglobulin antibody titer TgAb. Varies with method Updated on.
Cats with such a result do not have hyperthyroidism. What is free thyroxine concentration (fT4)? FT4 is the portion of the thyroxine hormone that is not bound to any blood proteins.
This measures a pituitary hormone that responds to changes in thyroid blood levels, and is a key test for many doctors. At most labs in the U.S., the reference range is from around 0.5 to 5.5.
The function of the thyroid gland is controlled by the pituitary gland at the base of the brain, through a hormone called TSH (thyroid stimulating hormone). What types of thyroid gland disorders occur in cats?
Free T3 Index FT3I 80-180 Radioactive iodine uptake RAIU 10-30. Serum thyrotropin TSH uU/ml Thyroxine-binding globulin TBG 12-20 ug/dl T4 1.8 ugm. TRH stimulation test Peak TSH 9-30 uIU/ml at 20-30 min Serum thyroglobulin l.
Because hyperthyroidism in cats is due to the excess production of thyroid hormones (primarily T4 the blood T4 concentration is usually markedly elevated in cats with the disease. Is the thyroxine concentration always increased in hyperthyroid cats?
Thyroid Test Results: How to Understand and Interpret Them: A guide to understanding TSH, Free T4, Free T3, TPO, TSI, TgAB, and other key thyroid tests.
What if the thyroxine concentration is decreased below the reference range? Since hypothyroidism (decreased thyroid function due to disease of the thyroid glands is very rare in cats, such a decrease is usually due the presence of an illness other than thyroid disease.
(The absence of these antibodies does not, however, rule out Graves' disease.) Note: some people with Hashimoto's disease also have these antibodies, and this can cause periodic short term episodes of hyperthyroidism.