Invaluable

I am probably the worst kind of patient when it comes to testosterone knowledge. I knew nothing and I mean nothing. Problem is I wanted to know everything once I started TRT. I found those answers here. ExcelMale has been my lifeline and Nelson has been incredible answering questions on subjects that I couldn't find. I started TRT in March 2014 and my life has never been better and I owe that to Nelson and this site. The timelines, the videos on so many subjects, the forums have all made my life better than its been in years. Subjects like when testosterone is not enough and e.d. are just subjects you can't find discussed anywhere but here and in such a professional and nonjudgemental way. Thank you ExcelMale. This site is nothing short of outstanding.
Tom Matt
 
Ditto
Nelson, Gene, Bass and many others make this the best male support site on the net. And a special shout out to James who has helped me out with my E recently.
 
Thanks, guys. We are trying our best to help men live better in a format that does not cost them any money. We certainly hope everyone else appreciates our different approach to men's education and self-advocacy in sexual function and fitness.
 
Thanks, guys. We are trying our best to help men live better in a format that does not cost them any money. We certainly hope everyone else appreciates our different approach to men's education and self-advocacy in sexual function and fitness.
 

hCG Mixing Calculator

HCG Mixing Protocol Calculator

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

Beyond Testosterone Podcast

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