Thyroid Panel (FT3, FT4, TSH)

Thyroid Panel (FT3, FT4, TSH): Feeling tired, cold or sluggish, or noticing weight, mood or hair changes? This blood test measures TSH, free T4 and free T3, the core markers of how your thyroid is working. It is for education and a conversation with your clinician; it does not diagnose a condition.