Quick Facts
- Sample: Blood
- Fasting: No fasting required (stop biotin at least 72 hours prior to collection)
- Turnaround: 2-3 days (may take longer based on weather, holiday, or lab delays)
What's Included
Thyroid Panel with TSH
- T3 Uptake: Measures the binding capacity of thyroid hormone carrier proteins in the blood.
- T4 (Thyroxine), Total: Measures overall thyroxine levels to help evaluate thyroid function.
- Free T4 Index (T7): A calculated value combining T3 Uptake and Total T4 to assess thyroid hormone activity.
- TSH: Produced by the pituitary gland to stimulate thyroid hormone production; helps identify an underactive or overactive thyroid.
Free Thyroid Hormones
- Triiodothyronine (T3), Free: Measures the unbound, active portion of T3, useful in confirming hyperthyroidism.
- Thyroxine (T4) Free (Direct): Measures the active, unbound form of thyroxine for a more accurate reflection of thyroid function.
Thyroid Antibodies
- Thyroid Peroxidase (TPO) Ab: Helps differentiate hypothyroidism from thyroiditis.
- Thyroglobulin Antibody: Assists in evaluating enlarged thyroid glands (goiters) and follow-up thyroid dysfunction findings.
Benefits
- Evaluates overall thyroid hormone production and activity.
- Assesses pituitary gland function through TSH measurement.
- Detects thyroid antibodies linked to autoimmune thyroid conditions.
- Supports monitoring of existing thyroid treatment.
- Provides a broad, detailed view of thyroid health in one panel.
Who Is This Test For?
- Individuals experiencing possible signs of thyroid imbalance.
- Those wanting a detailed evaluation of thyroid hormone levels.
- People monitoring existing thyroid treatment or management.
- Individuals with other autoimmune conditions who want thyroid involvement assessed.
- Those seeking a broader thyroid antibody and hormone evaluation.
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 offers a detailed look at thyroid function by combining hormone measurements (TSH, Total T4, Free T4, Free T3, T3 Uptake, Free T4 Index) with thyroid antibody testing (TPO and Thyroglobulin Antibody). Together, these markers help evaluate how well your thyroid and pituitary gland are working and whether autoimmune activity may be present. This panel does not diagnose any condition on its own.
2. Who would benefit from this test?
This panel may benefit individuals who want a comprehensive view of their thyroid hormone levels and antibody status. It may also be useful for those with existing autoimmune conditions who want thyroid involvement evaluated, or anyone wanting a fuller picture than a single thyroid marker provides.
3. When should I order this panel?
You may consider ordering this panel if you want a broader evaluation of thyroid function, are following up on previous thyroid test results, or are monitoring an existing thyroid treatment plan. This panel can also support ongoing autoimmune condition evaluations involving the thyroid.
4. Do I need to fast before this test?
No fasting is required for this panel. You should stop biotin consumption at least 72 hours prior to collection, and collection should not occur during or after heparin administration.
5. How quickly will I get results?
Results are typically available in 2-3 days, though this may take longer based on weather, holidays, or lab delays.
6. How do I interpret the results?
Thyroid results are often best understood by looking at patterns across multiple biomarkers rather than any single value alone. Hormone and antibody levels can interact in meaningful ways, so a healthcare provider is best positioned to interpret your complete results in context.
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, monitoring, or follow-up care is appropriate for your situation.
8. How often should I get tested?
Testing frequency depends on your individual health history and goals. Follow up as directed by your healthcare provider to determine an appropriate testing schedule for your needs.
9. Why early detection matters
Regular thyroid evaluation may support earlier awareness of hormone or antibody changes, which can help inform ongoing monitoring conversations with your healthcare provider. This panel is intended to support awareness, not to guarantee detection of any specific condition.
Pre-test preparation
No fasting is required. Stop biotin consumption at least 72 hours prior to collection. Collection should not occur during or after administration of heparin.
Do not stop prescribed medication unless instructed by your healthcare provider.
