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  1. M

    Am I understanding half-life correctly?

    I'm trying to gain better insight into how various protocols affect the rate at which T. Cyp. builds up in the system (e.g., weekly vs. 3x week vs. daily). My understanding is that the half-life of T. Cyp. is 8 days. So if you inject 100mg on Day 1, there is approximately 50mg remaining in your...
  2. M

    Chart showing rise in E2 with T injection?

    Howdy - wondering if someone could point me towards a chart or resource that shows an approximation of the rate at which T gets metabolized into E2. For example: If I inject 80mg T Cyp at 8am Monday, what does my E2 look like at 4 hours post-injection, 12 hours, 1 day, 2 days, etc. Forgive me...
  3. M

    T-cyp from one pharmacy burns, other does not?

    Started TRT 3 months ago. I'm on 160mg T-cyp weekly (divided into 2 doses of 80mg). For the past 3 months, I've been injecting subQ with Tcyp from Olympia pharmacy. Yesterday, I received my first subQ injection from Tcyp from Empower pharmacy. The Tcyp from Olympia always caused a burning...
  4. M

    Are my DHT levels too high?

    Hey gents - I'm new to TRT and new to this forum. Glad to have found both. I've been on TRT for about 12 weeks now. I'm on 80mg T Cyp 2x week, plus 500iu hCG 3x week. Also take 0.25mg anastrozole 3x week. Just had my first post-TRT labs done last week, and I'm wondering how my DHT levels compare...
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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