Thyroid
Total T3
Unit: ng/dLID: T010
What This Test Measures
Total triiodothyronine (bound + unbound)
Conventional vs. Functional Optimal Range
Conventional "Normal"
80-200 ng/dLYour doctor says you're "fine" anywhere in this range
Functional Optimal
90-168 ng/dLThis is where you actually feel great
The gap between these ranges is why you feel terrible with "normal" labs. Conventional medicine waits for disease. Functional medicine optimizes for health.
Gabriel's Take
Total T3 reflects overall T3 production/conversion. Gabriel's optimal band is 90-168. Low Total T3 with normal T4 = conversion problem. Free T3 is more clinically useful, but Total T3 trending low flags conversion issues early.
When This Test Is High
Hyperthyroidism, T3 supplementation
When This Test Is Low
Poor T4-to-T3 conversion, hypothyroidism
Related Conditions
Metabolism, energy, conversion efficiency
Recommended Follow-Up
Check Free T3 for more accurate assessment; evaluate conversion