Quick Facts
- Sample: Blood
- Fasting: No fasting required. Stop biotin consumption at least 72 hours prior to collection.
- Turnaround: 1-2 days. May take longer based on weather, holiday, or lab delays.
What's Included
Thyroid Panel
- TSH (Thyroid Stimulating Hormone): Produced by the pituitary gland, this hormone helps the thyroid create T4 and T3.
- T4 (Thyroxine), Total: A hormone made by the thyroid that helps maintain metabolism and other body functions.
- T3 Uptake: Evaluates the number of blood proteins that carry thyroid hormones throughout the body.
- Free T4 Index (T7): A calculated value comparing the amount of unbound (free) T4 to T4 bound to proteins in the blood.
Benefits
- Evaluates overall thyroid gland function.
- Screens for common thyroid disorders.
- Helps monitor hormone levels during thyroid supplement use.
- Combines four key thyroid biomarkers in one panel.
- Offers fast turnaround with minimal preparation.
Who Is This Test For?
- Individuals wanting a general overview of their thyroid function.
- People experiencing symptoms that may relate to thyroid activity.
- Individuals currently taking thyroid supplements who want to monitor levels.
- Those interested in establishing a thyroid health baseline.
- People following up on previous thyroid-related concerns with a healthcare provider.
How It Works
- Order Your Test Online
- Visit a Local Lab
- Get Results Online
FAQ
1. What is the purpose of this test?
This panel evaluates thyroid function by measuring TSH, total T4, T3 uptake, and the Free T4 Index together. These biomarkers work together to reflect how well your thyroid gland is producing and regulating hormones. This panel is intended to support a broader picture of thyroid activity and is not a standalone diagnostic tool.
2. Who would benefit from this test?
This panel may benefit individuals interested in a general assessment of thyroid function, including those wanting to establish a baseline or monitor hormone levels while taking thyroid supplements. It can also be useful for people who want a broad snapshot of thyroid-related biomarkers to discuss with a healthcare provider.
3. When should I order this panel?
You may consider ordering this panel for general thyroid function screening, to establish a baseline, or to monitor hormone levels if you are taking thyroid supplements. It may also be useful as part of an ongoing conversation with your healthcare provider about thyroid health.
4. Do I need to fast before this test?
No fasting is required. You should stop biotin consumption at least 72 hours prior to collection.
5. How quickly will I get results?
Results are typically available in 1-2 days. Turnaround may take longer based on weather, holidays, or lab delays.
6. How do I interpret the results?
Patterns across your TSH, T4, T3 uptake, and Free T4 Index results are often more meaningful than any single value on its own. Reviewing these results together with a healthcare provider can help you better understand what they mean for you.
Disclaimer: Reference ranges may vary by laboratory. Listed ranges are general guidelines and may differ from those used by the performing lab. Always consult your healthcare provider for interpretation.
7. What should I do if my results are abnormal?
If any of your results fall outside the expected range, share them with your healthcare provider. They can help determine whether further testing or follow-up is appropriate based on your individual health history.
8. How often should I get tested?
Testing frequency depends on your individual health needs and goals. Retest as directed by your healthcare provider, especially if you are monitoring thyroid hormone levels over time.
9. Why early detection matters
Regular thyroid monitoring may support earlier awareness of changes in hormone levels over time. Staying informed about your thyroid function can help guide conversations with your healthcare provider, though this panel does not guarantee detection of any specific condition.
Pre-test preparation
No fasting is required. Patients should stop biotin consumption at least 72 hours prior to the collection.
