Description
Free T3 (Triiodothyronine) Diagnostic Test Panel
The Free T3 Test measures the active, unbound form of triiodothyronine (T3) hormone in your blood. T3 is a critical thyroid hormone that regulates metabolism, energy production, body temperature, and heart function. Because Free T3 is not attached to proteins, measuring its circulating concentration gives an accurate assessment of active thyroid function, particularly in diagnosing and monitoring hyperthyroidism.
Key Indications for Testing:
- Evaluating symptoms of hyperthyroidism (unexplained weight loss, rapid heartbeat, anxiety, heat intolerance)
- Confirming T3 toxicosis (overactive thyroid producing elevated T3)
- Monitoring response to antithyroid medications or thyroid therapies
- Assessing complex thyroid hormone dysfunctions alongside TSH and Free T4 tests
Test Specifications & Instructions:
- Specimen Type: Blood Sample (Serum)
- Fasting Required: Fasting is not strictly required; however, morning sample collection is recommended.
- Reports: Fast turnaround time with verified digital report delivery.
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