Sentences with phrase «nonthyroidal illness»

With quantitative measurement of thyroidal 99mTc uptake, there is little to no overlap between dogs with primary hypothyroidism and dogs with nonthyroidal illness.

Illness not involving the thyroid gland can alter thyroid function tests and has been labeled «nonthyroidal illness» or «euthyroid sick syndrome.»

However, in dogs with substantial nonthyroidal illness, the free T4 is likely to be decreased.

Testing of thyroid function should be postponed until the nonthyroidal illness is resolved.

Every attempt should be made to exclude nonthyroidal illness before starting a therapeutic trial.

However, a subnormal basal T4 concentration alone is not diagnostic; it may indicate an animal that is normal, hypothyroid, or suffering from a nonthyroidal illness with a secondary decrease in the basal T4 concentration (sick euthyroid syndrome; see below).

In contrast, falsely high serum TSH concentrations (ie, a false - positive result) are occasionally found in euthyroid dogs with nonthyroidal illness.

This is called «nonthyroidal illness syndrome» or «euthyroid sick syndrome,» and has no known relationship to the development of clinical hypothyroidism in dogs.

Evidence for an inhibitor of extrathyroidal conversion of thyroxine to 3,5,3 ′ - triiodothyronine in sera of patients with nonthyroidal illnesses.