Description
Purpose of the Test:
• Assess overall thyroid function
• Diagnose and monitor hypothyroidism and hyperthyroidism
• Evaluate thyroid hormone levels in conjunction with TSH and T3 tests
• Monitor effectiveness of thyroid hormone replacement therapy
What the Test Involves:
• A blood sample is drawn from a vein
• The test uses immunoassay techniques to measure total T4 (free + protein-bound)
• Total T4 helps give a broader picture of thyroid function
