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I have no idea, Dr Crisler and Defy had instructed me the same, to take NDT then going for labs, I mean, I don't consider the same as Testosterone injections here, yes we want to see our lowest level before injection, but you take NDT every day in the am at least, or sometime twice per day, so it makes sense to me to monitor levels when you take it, when we don't take it we are mostly at sleep, I don't think we want to have an elevated FT3 while at sleep, even because it would be hard to sleep I think.


We do the same when applying Testosterone cream right? apply it then go for labs. Same principle applies for NDT for me, since it is something you do everyday, brings level up then falls during the day


If that was the cause, it means I am not treated the proper way cause last lab showed FT3 at 6 after taking NDT and still symptomatic.


Maybe [USER=12687]@Dr Justin Saya MD[/USER]  is generous enough with his time to dedicate 2 min to explain why the protocol is to take NDT then going for labs instead of before.


TRT Hormone Predictor Widget

TRT Hormone Predictor

Predict estradiol, DHT, and free testosterone levels based on total testosterone

⚠️ Medical Disclaimer

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.

ℹ️ Input Parameters

Normal range: 300-1000 ng/dL

Predicted Hormone Levels

Enter your total testosterone value to see predictions

Results will appear here after calculation

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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