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Thyroid blood tests: Types and what results mean

Thyroid blood tests help figure out how well your thyroid gland is working. TSH helps the thyroid gland know when to make ...
Medscape

Direct Measurement of T3 Is Likely Vital, Say Researchers

To assess thyroid function, clinicians typically determine blood levels of thyroid-stimulating hormone (TSH) and thyroxine (T4) and do not directly measure triiodothyronine (T3). However, findings ...