Thyroid Function Test measures hormones that control your metabolism, energy levels, and overall body functions. It typically includes TSH, T3, and T4 levels to assess thyroid health.
Thyroid disorders affect millions but often go undiagnosed. These tests are crucial for detecting hypothyroidism and hyperthyroidism, which can cause weight changes, fatigue, mood issues, and heart problems if left untreated.
Particularly important for women (5-8 times more likely to have thyroid issues), people with family history, and those experiencing unexplained fatigue, weight changes, or mood swings common in stressful urban environments.
No fasting required, but it's best to take the test at the same time of day for consistency. If on thyroid medication, consult your doctor about timing.
TSH levels indicate thyroid function - high TSH suggests underactive thyroid, low TSH suggests overactive thyroid. T3 and T4 levels provide additional details about thyroid hormone production.
TSH: 0.4-4.0 mIU/L, T4: 5.0-12.0 μg/dL, T3: 80-200 ng/dL
Unexplained weight changes, fatigue, hair loss, mood changes, irregular periods, and sensitivity to hot or cold temperatures.
Thyroid medications, biotin, and some heart medications can affect results. Always inform your doctor about all medications and supplements.
Annual testing if you have risk factors. If on thyroid medication, every 6-8 weeks initially, then every 6-12 months once stable.
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