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Hormone Tests
TSH with Reflex to Free T4
TSH screening that automatically adds Free T4 testing if TSH is abnormal for comprehensive thyroid evaluation.
CPT code
84443
Turnaround time
24–72 hours
Fasting required
No fasting needed
Collection container
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About this test
TSH screening that automatically adds Free T4 testing if TSH is abnormal for comprehensive thyroid evaluation.
How to prepare
- 1
Bring a valid photo ID to your appointment
- 2
Plan for a 15–30 minute visit