12 Questions
What is the most commonly performed static thyroid hormone measurement for screening hypothyroidism in dogs?
Total T4 concentration
Which serum biochemical abnormality is widely observed in dogs with hypothyroidism?
Hypercholesterolemia
What is the classic hematologic finding associated with hypothyroidism in dogs?
Normocytic, normochromic, nonregenerative anemia
Why is measurement of free T4 not always superior to total T4 in diagnosing hypothyroidism in dogs?
Differences in serum binding proteins affect free T4 assays
What should be suspected when serum T3 concentrations are high in dogs with documented hypothyroidism?
Anti-T3 antibodies interference
Why is the diagnostic value of serum T3 determination considered weak during early thyroid failure?
The thyroid increases relative T4 synthesis during failure
What is the most reliable method for diagnosing hypothyroidism in dogs?
Measuring serum thyroid hormone levels
Which statement about hypothyroidism in dogs is true?
It is probably one of the most overdiagnosed diseases in dogs
What can lead to low serum thyroid hormone measurements in euthyroid (normal thyroid function) dogs?
Nonthyroidal illness and prior administration of certain drugs
What is the purpose of provocative thyroid function tests in diagnosing hypothyroidism?
To confirm the diagnosis by stimulating the thyroid gland
What is the primary factor in choosing and interpreting diagnostic tests for hypothyroidism?
The index of suspicion for hypothyroidism
What does the text suggest about clinicopathologic abnormalities associated with hypothyroidism?
The severity usually correlates with the severity and chronicity of the hypothyroid state
Learn about the diagnosis of hypothyroidism in animals, which is based on clinical findings and serum thyroid hormone testing. Explore how hypothyroidism is often overdiagnosed in dogs, with many diseases mimicking its symptoms. Understand the impact of nonthyroidal factors on thyroid function testing.
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