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How do I request that a Free Thyroxine (Free T-4) be completed only if the Thyroid Stimulatine Hormone is out of range?

April 26, 2017Free Hormone range request t-4 Thyroid Thyroxine

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How do I request that a Free Thyroxine (Free T-4) be completed only if the Thyroid Stimulatine Hormone is out of range?

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By ordering a Thyroid Stimulating Hormone (TSH), Reflexive, if the TSH is outside the adult reference range, a Free T4 is automatically analyzed at an additional charge to the patient.