If you've spent any time on men's health forums, Facebook groups, or Reddit, you know the information surrounding HCG (Human Chorionic Gonadotropin) can be a dizzying mix of personal anecdotes, "bro science," and conflicting advice. It's a...
This document synthesizes key findings on the use of Human Chorionic Gonadotropin (hCG) in men, either as an adjunct to Testosterone Replacement Therapy (TRT) or as a standalone monotherapy. By mimicking the body's Luteinizing Hormone (LH), hCG...
I collected questions and answers posted on ExcelMale.com in the last 10 years about the use of human chorionic gonadotropin in men who want to prevent loss of testicular size and fertility while on testosterone replacement therapy or that want...
Starting a family with a partner that you love is one of the most magical and exciting experiences that you will ever encounter. It is also daunting and very intimidating, but ultimately, becoming a parent will change you for the better. Sadly...
* To our knowledge, this is the first report demonstrating alterations in spermatogenesis as intratesticular morphological changes, specifically enlargement of seminiferous tubules, by US. Ultrasonographic Seminiferous Tubule Changes Track...
What's the best HCG dosing protocol for men on TRT? Whether you're using HCG to maintain fertility, prevent testicular atrophy, or preserve intratesticular testosterone, the dosing frequency matters. Should you inject daily, every other day, or...
Objectives To evaluate the clinical necessity and optimal pharmacological strategy for post-cycle therapy (PCT) in recreational anabolic-androgenic steroid (AAS) users with normal pre-cycle reproductive profiles. Subjects and Methods This...
What's the optimal HCG dose to preserve fertility and testicular size while on testosterone replacement therapy? Two landmark studies provide critical guidance for men seeking to maintain reproductive function during TRT. Research from Baylor...
TRT can change your hormones — but it may also shut down your sperm. In this video, Dr. Justin Houman (MD, board-certified urologist & men’s health specialist) explains how testosterone replacement therapy affects fertility, sperm count, and...
In an insightful interview from the "Dr. Gabrielle Lyon" YouTube channel, Dr. Larry Lipshultz, a renowned expert in male reproductive health, discusses the alarming global decline in male fertility, attributing it to factors such as obesity...
I am very pleased to announce that I finally finished my full color 427-page booK: Nelson Vergel's "Beyond Testosterone: The Illustrated Guide" and the associated free online resource at Excelmale.com serve as comprehensive guides to...
Below is a synthesis of what the literature presently shows about clomiphene (and its trans-isomer enclomiphene) and reversal of testicular atrophy in men. What hard data exist? Setting Study design (n) Testicular-volume result Time to...
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.
