freet

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  1. N

    FSH and LH almost zero but midrange T

    I have the following lab results and I'm very confused: FSH - 0.1 in a 1.5 to 12.4 range LH 0.1 in a 1.7 to 8.6 range I'm already on TRT with Nebido, last shot that was supposed to last for 3 months was 22 days ago and my Total T is 446 and Free T is 15.26. I understand FSH and LH reduce with...
  2. madman

    Reassessing Free-Testosterone Calculation by Liquid Chromatography–Tandem Mass Spectrometry Direct Equilibrium Dialysis

    Context: Assessment of free testosterone (FT) might help evaluate androgen status in patients with borderline total testosterone (T) and/or altered sex hormone–binding globulin (SHBG) levels. However, the validity of different methods to measure FT is debatable. Methods: Serum from 183 women...
  3. G

    Injecting once or twice per week?

    I have been injecting 200mg of Cyp once per week, however, my new doctor suggests splitting it into 2. Not for any reason other than he's seen it work well for many and keep them more balanced throughout the week. The logic seemed fine so i've tried it the past couple of weeks, and it almost...
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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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