What is reliable way to measure T3 dose?

CROM

Member
How do I measure what the correct dosage of T3 is right for me? Should I slowly increase my dose until my RT3 goes to normal level? Should it be based on TSH? Should it be based on body temperature and pulse rate (I am aware that my resting pulse shouldn't exceed 80 and body temperature 98.6)?

I’ve done a lot of low-calorie, starvation type dieting and that might be why my Reverse T3 is high. Some doctors suggest lowering RT3 will help fix my metabolism so that I am better able to lose weight and increase energy.

My last lab work was…

TSH 5.44
T4, Free 1.5 (0.8–1.8)
T3, Free 3.8 (2.3–4.2)
T3, Total 108 (76–181)
T4, Total 9.2 (4.9–10.5)
T3, Reverse 30 (22–35)

My doctors have given me T3 before but only in small dosages (10–15 mcg) but that didn’t seem to do much for my RT3. So I was going to take it upon myself to take a larger dose.

Btw, I am currently taking 25mcg T3. How long should I wait to check blood again?
 
How do I measure what the correct dosage of T3 is right for me? Should I slowly increase my dose until my RT3 goes to normal level? Should it be based on TSH? Should it be based on body temperature and pulse rate (I am aware that my resting pulse shouldn't exceed 80 and body temperature 98.6)?

I’ve done a lot of low-calorie, starvation type dieting and that might be why my Reverse T3 is high. Some doctors suggest lowering RT3 will help fix my metabolism so that I am better able to lose weight and increase energy.

My last lab work was…

TSH 5.44
T4, Free 1.5 (0.8–1.8)
T3, Free 3.8 (2.3–4.2)
T3, Total 108 (76–181)
T4, Total 9.2 (4.9–10.5)
T3, Reverse 30 (22–35)

My doctors have given me T3 before but only in small dosages (10–15 mcg) but that didn’t seem to do much for my RT3. So I was going to take it upon myself to take a larger dose.

Btw, I am currently taking 25mcg T3. How long should I wait to check blood again?
can cytomel by itself be used to treat hypothyroidism
 

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This tool provides predictions based on statistical models and should NOT replace professional medical advice. Always consult with your healthcare provider before making any changes to your TRT protocol.

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Understanding Your Hormones

Estradiol (E2)

A form of estrogen produced from testosterone. Important for bone health, mood, and libido. Too high can cause side effects; too low can affect well-being.

DHT

Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.

Free Testosterone

The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.

Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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