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  1. C

    Best day in TRT cycle to get blood drawn for labs?

    I'm taking weekly injections of cypionate of 100mg, I've usually been getting tested on the morning of the 7th day before in injecting my usual dose of Testosterone. Just want to know if that is the best practice?
  2. C

    Hello and glad to be here.

    Checked this site out and i'm glad to have found it!
  3. C

    Need some advice.

    I'm a 38 year old who's first testosterone test came back at 230 with a reference of 348-1197. Was put on testosterone. Cyponiate at 200mg a month. After 1 month I asked to be on bi weekly 100mg injection and the doctor agreed to it. 4 months into treatment my doctor wanted to recheck lvls...
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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