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Hormone Tests
Free T3
Measures active thyroid hormone. Helps diagnose hyperthyroidism and monitor thyroid treatment.
CPT code
84481
Turnaround time
24–72 hours
Fasting required
No fasting needed
Collection container
Gold Top (SST)
About this test
Measures active thyroid hormone. Helps diagnose hyperthyroidism and monitor thyroid treatment.
Specimen requirements
Collection container
Gold Top (SST)
gold top
Specimen
Serum
How to prepare
- 1
Bring a valid photo ID to your appointment
- 2
Plan for a 15–30 minute visit
Panels including this test
Save by ordering this test as part of a curated bundle:
PanelSave $871
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Wellness Profile (No Albumin)
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Thyroid Panel
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