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Test Description
The Thyroxine (T4) level test measures the amount of thyroxine, a crucial thyroid hormone, in the blood. Thyroxine plays a key role in regulating metabolism, digestion, muscle function, and bone health.
Indications of the Test
- Assessing thyroid function
- Diagnosing hypothyroidism or hyperthyroidism
- Monitoring thyroid treatment effectiveness
- Investigating symptoms like fatigue, weight changes, and mood swings
Patient Preparation/Instructions
No special preparation is usually required for a T4 level test. However, it is advisable to follow any specific instructions provided by your healthcare provider. Inform them about any medications or supplements you are taking, as they may affect the test results.
Typical Reference Values
- Total T4: 5-12 mcg/dl in adults
- Free T4: 0.8-1.8 ng/dl in adults
- Free T4 in children varies by age (refer to the provided table)
Turnaround Time
The turnaround time for the Thyroxine (T4) level test is typically 1-2 days once the laboratory receives the sample.
Order This Test
To order the Thyroxine (T4) level test, simply click the “Order Test” button and add it to your cart. If you have any concerns about your thyroid health or need further guidance, consult with a healthcare provider for personalized advice.
