Recent content by Nelson Vergel

  1. Nelson Vergel

    The Role of Estrogen and Testosterone in Determining Heart, Lung, and Brain Regulation in Humans

    https://www.excelmale.com/threads/aromatase-in-the-human-brain.24608/
  2. Nelson Vergel

    Subcutaneous Testosterone Injections: The Complete Guide for Men on TRT

    https://www.excelmale.com/threads/trt-with-subcutaneous-testosterone-injections-a-safe-practical-and-reasonable-option.24297/
  3. Nelson Vergel

    Subcutaneous Testosterone Injections: The Complete Guide for Men on TRT

    Are you tired of painful intramuscular injections and wondering if there's a more comfortable way to administer your testosterone replacement therapy? For decades, intramuscular (IM) injections have been the standard method for testosterone delivery, requiring long needles, deeper tissue...
  4. Nelson Vergel

    Empower FDA Warning Letter

    A lot of people understandably get concerned when they see an FDA Warning Letter, so here’s some context on what these documents are (and how to read them). 1) What a Warning Letter is (and what it isn’t) A Warning Letter is the FDA’s way of formally notifying a company that the Agency...
  5. Nelson Vergel

    Sex Hormone Binding Globulin (SHBG): The Complete Guide for Men on TRT

    @Cataceous Thanks for your input. I made some edits. I am not sure if I complicated the issue more. @madman ?
  6. Nelson Vergel

    DHT: How High is Too High

    Have you tried scrotal testosterone cream ?
  7. Nelson Vergel

    The Optimal Creatine Protocol for Strength, Brain, and Longevity

    Creatine Monohydrate Complete Guide: Pharmacokinetics, Pharmacodynamics, FAQs & Research Compiled December 2025 Part 1: Pharmacokinetics & Pharmacodynamics Pharmacokinetics Absorption Baseline absorption characteristics: • Oral bioavailability of creatine monohydrate is approximately...
  8. Nelson Vergel

    Anastrozole for Men: The Complete Evidence-Based Guide for Testosterone Therapy

    I welcome comments from all of you. Do you like this new format for articles? Thank you.
  9. Nelson Vergel

    DHT: How High is Too High

    Thanks @zuckerbaer for the detailed post! I learned a lot by reading it. Have you ever tried T creams plus twice per week 500 IU hCG? Are you still taking DHEA? I am glad you are feeling better!
  10. Nelson Vergel

    Anastrozole for Men: The Complete Evidence-Based Guide for Testosterone Therapy

    https://www.excelmale.com/threads/complete-guide-to-anastrozole-for-men.31357/
  11. Nelson Vergel

    Anastrozole for Men: The Complete Evidence-Based Guide for Testosterone Therapy

    By Nelson Vergel | ExcelMale.com | Updated December 2025 Introduction Should you take an aromatase inhibitor with testosterone replacement therapy? This question has sparked considerable debate in men's health circles, with some clinics routinely prescribing anastrozole alongside TRT while...
  12. Nelson Vergel

    THE DEA And ACCESS TO TRT TELEMEDICINE

    They extended it for the fourth time !
  13. Nelson Vergel

    Sex Hormone Binding Globulin (SHBG): The Complete Guide for Men on TRT

    Thank you. I am trying to make articles that contain the main discussions about each important topic or search term that brings guys to the site in search for answers.
  14. Nelson Vergel

    Sex Hormone Binding Globulin (SHBG): The Complete Guide for Men on TRT

    By Nelson Vergel | ExcelMale.com | Updated December 2025 When evaluating testosterone levels, most men focus exclusively on total testosterone—a single number that tells only part of the story. What many don't realize is that a protein called sex hormone binding globulin (SHBG) determines how...
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

hCG Mixing Calculator

HCG Mixing Protocol Calculator

Beyond Testosterone Podcast

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