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    Total Testosterone dropped from 19 nmol/l to 14 nmol/l, from age 19 to 20, is it normal?

    Hi People, My Total Testosterone dropped from 19 nmol/l to 14 nmol/l, from age 19 to 20, is it normal? I read in medical journals that usually a man's Testosterone levels peak in his late 20`s, and start to drop only after 30`s usually 1% per year. But is it normal what is happening to me...
  2. Y

    Felt bad for the last couple of years. Got hormone tests done. Any input is help

    Felt bad for the last couple of years. God hormone tests done. I constantly feel cold +Tired and have yellowish dry skin. Feel like Death ( A shadow of my former self) SRS. The change occurred suddenly as if someone turned a switch. Im 21 btw. Total Testosterone = 439 ng/dl Free...
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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