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FT4 (Free Thyroxine)

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FT4 (Free Thyroxine)

Accredited Facility E-report Qualified Specialists

This test is done to measure free T4, one of the main hormones produced by the thyroid gland. It plays a crucial role in regulating metabolism, heart function, and energy balance. Abnormal levels may indicate thyroid disorders such as hypothyroidism or hyperthyroidism and are often interpreted together with TSH and FT3 results.

  • If there are symptoms of hypothyroidism such as fatigue, weight gain, or cold intolerance.
  • If there are symptoms of hyperthyroidism such as weight loss, palpitations, or anxiety.
  • If TSH levels are abnormal.
  • If a healthcare provider is monitoring thyroid disease or treatment.
  • No fasting is required.
  • No special preparation is usually needed.
  • Inform your healthcare provider about thyroid medications or supplements.
  • Follow any instructions provided by the laboratory or healthcare provider.
    • FT4 (Free Thyroxine)
    No labs currently offering this test.