T4 (Thyroxine) (Test Code 867) from Quest Diagnostics is a blood test that measures the level of thyroxine (T4), a key hormone produced by your thyroid gland. T4 plays an essential role in regulating your metabolism, energy, and overall thyroid health.
Why is it important?
This test helps assess thyroid function and can detect thyroid imbalances like hypothyroidism (underactive thyroid) or hyperthyroidism (overactive thyroid). By understanding your T4 levels, you can take steps to support healthy thyroid function with the right diet and nutrients.
How to prepare:
No special preparation is typically required for this test, but your healthcare provider will guide you if any specific steps are needed.
With the T4 test, you'll get valuable insights into your thyroid health and can take action to improve your well-being!