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* This is not a home test kit. You will need to visit a local lab for testing.
Fasting Required: No
Turnaround Time: 2-7 business day
Specimen Type: Blood
Use:
This test is used to distinguish between high T4 levels due to hyperthyroidism and due to increased binding by TBG in euthyroid individuals who have normal levels of free hormones.
It is a carrier protein synthsized in the liver. It binds to thyroid hormones T3 and T4 and helps their transport through blood. An increase in levels of TBG will result in increased levels of total T4 and T3, without actually increasing the activity of thyroid hormone. If the levels of T4 and T3 are not clinically explainable, TBG should be tested.
Recommended For:
Suspected hyperthyroidism, monitoring treatment for hyperthyroidism.
Special Notes:
No special preparation is necessary prior to blood sample collection.
Tests Included:
Estimated Turn Around For Results:
2-10 Business Days
For an exact turnaround time for results, please contact us at Personalabs and we will contact the lab on your behalf as turnaround times vary depending on testing location or lab testing provider.
| Provider | LabCorp, Quest |
|---|
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Results can be provided in as little as 24-48 hrs. For more complex tests, please contact us for turn around times.
