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  1. M

    T3/T4 therapy - weight gain

    Need some advice with some side effects guys. Had a thread in the bloodwork forum but figured this would be more appropriate here. The numbers prior to beginning protocol: Free T3 - 1.3 pg/ml (ref 2.0 - 4.4) Free T4 - .82 ng/dl (ref .82 - 1.77) TSH - 1.180 uIU/mL (ref .45 - 4.5) Thyroglobulin...
  2. M

    Interpret Thyroid Labs - Fatigue Symptoms

    Just got back some follow up labs from Defy. I've been dealing with some fatigue issues for a while now. I'm not necessarily tired all day but I just have this fatigue like feeling where I don't have any energy some days and libido isnt back to where I want it. Workouts are pretty intense, life...
  3. M

    T and HCG, fertility and semen analysis

    Hi all, 33 y/o Male currently under Dr. Saya's care. I am currently on T Cyp 50mg 2 x week, HCG 500 IU 3 x week, and anastrozole .15mg 3 x week. Just did bloodwork after 3 months of being on this regimen, everything looks good except LH and FSH. LH - .1 FSH - <.2 E Sensitive - 20.8 Total T -...
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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