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Description: The Thyroxine-binding Globulin (TBG) test may be used to determine if high T4 levels are due to hyperthyroidism. The TBG test may also be used to help diagnose thyroid diseases or hereditary deficiency. Turnaround time for the TBG test is typically 1-3 business days.
Requirements: This thyroid test has no fasting requirements.
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