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  1. A

    Just got some blood test results

    LH <0.5 U/L FSH <0.5 U/L Prolactin 148mU/L Cortisol 516nmol/L (morning) Oestradiol <50 pmol/L (undetectable) Testosterone 20.6 nmol/L (10-30) Growth hormone 0.11ug/L BIGF1A T/F Not a clue what that last one is about.. assuming its something to do with IGF-1. Mostly curious about the...
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    how to manage estradiol on testosterone undecanoate (nebido?

    I just got my shot of Nebido about 5 days ago (4th shot and I get it every ten weeks 1000mg/4ml). By the end of my third shot I got labs done and my total T was at 520 ng/dl. My estradiol was at 63 pg/ml which I know is high. After getting this shot I feel horrible. I mean I can't even...
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    New(ish) to TRT, not really feeling much improvements. Dark circles under eyes, mild acne, fatigue

    Hello! I'm a new user just looking for some feed back. I have been on nebido about 5 months now and had been started on test cyp about 2 months before that. The reason I am posting is I'm really not feeling much better from it, possibly even worse. I have always had very clear skin but in the...
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    24 year old on Nebido about 5 months, starting to get mild gyno and feeling awful.

    Hello! I was diagnosed with secondary hypogonadism and I am on Nebido every 10 weeks. I am experiencing horrific brain fog, fatigue and gyno too. I also have really bad black bags under my eyes, which dont go away with sleep. I went in to my doctor today about it to get bloods done for liver...
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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