Hashimoto's thyroiditis laboratory findings
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Laboratory findings consistent with the diagnosis of Hashimoto's thyroiditis usually include increased thyroid stimulating hormone, decreased free T3 and free T4, and anti-thyroid peroxidase antibodies.
Laboratory findings consistent with the diagnosis of Hashimoto's thyroiditis usually include increased thyroid stimulating hormone, decreased free T3 and free T4, and Anti-thyroid peroxidase antibodies.
- Increased Thyroid-stimulating hormone (TSH)
- Decreased Free T3 and Free T4
- TSH may be decreased in the transient hyperthyroid state
- Anti-thyroid peroxidase antibodies (anti-TPO) (correlates with the disease severity)
- Anti-thyroglobulin antibodies (anti-Tg)
- Anti-microsomal antibodies can help obtain an accurate diagnosis
Diagnostic findings of Hashimoto's thyroiditis
|Thyroid function test||↓TSH ↑ T3 and T4||In transient hyperthyroidism|
|↑ TSH ↓ T3 and T4||In the hypothyroid state|
|Antibodies||Anti-thyroid peroxidase antibodies||Positive|
|Radioiodine reuptake||I-123 reuptake||↓|
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