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01Markers · Thyroid

Reverse T3

Reverse triiodothyronine

An inactive form of T3 made from T4. The body makes more of it during illness, fasting and physical stress.

Measured in
Blood (serum)
Units
ng/dL, pmol/L
Also called
rT3, reverse T3
  1. Ashwagandha
  2. Berberine
  3. Collagen
  4. Creatine
  5. Finnish sauna
  6. HIIT
  7. Iron
  8. L-carnitine
  9. L-theanine
  10. Lion's mane
  11. Magnesium
  12. Melatonin
  13. Milk thistle
  14. NAC
  15. NAD+
  16. Omega-3
  17. PQQ
  18. Red yeast rice
  19. Resveratrol
  20. Taurine
  21. Ubiquinol (CoQ10)
  22. Vitamin C
  23. Vitamin D3
  24. Vitamin E
  25. Vitamin K2
  26. Zinc
  27. Zone 2 cardio
Reverse T3 across the 27 supplements and practices researched so far · best evidence first

AWhat moves Reverse T3

0 of 27 studied

No supplement or practice in Luneri has a usable human study of reverse T3 yet.
  • Supported 0
  • No effect 0
  • Conflicting 0
  • Not studied 27

Why trials measure it. Some fasting and illness studies report it to describe how T4 is being converted.

About this marker: Can Reverse T3 Assay Be Employed to Guide T4 vs. T4/T3 Therapy in Hypothyroidism? (PubMed Central, U.S. National Library of Medicine).

Evidence states come from published human studies found in PubMed and OpenAlex and read by a model pipeline. "Not studied" means no usable human study was found for this marker, which is a gap, not a negative result. Every result links its studies so you can check it.

Research summary for education. Not medical advice.