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    Dialed in on Testosterone Propionate, How to Switch to Cypionate

    If I were dialed in on ED Propionate injections, how does one transfer that to Cypionate effectively? What is the strategy? Do I use steroidplotter.com and plug in various amounts of Cypionate until it matches the level for Propionate?
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    Primobolan/Tren HRT No Test

    The other day I came across a YouTube video of this guy who, as an experiment, ran primobolan with no test and he was running .15mg of estradiol valerate EOD to make sure he was getting enough estrogen. I am trying to find it again, but have not been able to. Does anybody know what I am talking...
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    Nandrolone and labs, changes?

    I am wondering how your labs changed when you introduced NPP/Nandrolone to your TRT? Did you have a before and after? Have you read any accounts? I did some searching but I came up short. What I am specifically wondering is, does NPP raise Free Testosterone more significantly; I seem to...
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    Dialing in my TRT, next steps

    I've been running TRT for a while but am finally dialing in my TRT. Before and during TRT, my libido and EQ have been so-so. I have been taking 2.5mg of tadalafil daily, which sometimes does not work. I am thinking about raising it to 100mg every four days (175mg a week). These labs are based...
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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