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A 20-year-old male asked:

How do the free t3 (liothyronine) t4 differ from total t3 (liothyronine) t4 ? and which of them is more accurate in diagnosing thyroid issues along with the tsh test ?

1 doctor answer2 doctors weighed in
Dr. Ed Friedlander
Pathology 46 years experience
Prefer the frees: Totals are cheaper but require a little interpretation. Both are accurate. Thyroid disease is often underappreciated and i'm glad you're being checked.
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Last updated Nov 18, 2013


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