Fertility

Beyond Testosterone: The Illustrated Guide is Now on Amazon
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"Beyond Testosterone" is a comprehensive 427-page guide authored by Nelson Vergel, a seasoned expert in the realm of hormone therapy. With a vibrant full-color layout and extensive illustrations, this book stands as an essential resource for both...
What is a Normal Ejaculate Volume? Data from 60,823 Men
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* Of 60,823 individuals, the mean ejaculated seminal volume was 3.4 ml, with median volume 3.1 ml, interquartile range 2.2, 4.3 ml, max 14.5 ml, and standard deviation 1.7 ml (Fig. 1A). The ejaculate volume distribution is skewed right, with some...
Weight Loss Could Be Key to Male Infertility: What the Research Says
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Weight Loss Could Be Key to Male Infertility: What the Research Says There's some exciting news for men struggling with infertility and obesity—losing weight could make a big difference. For the first time, research shows that shedding extra...
Semen Analysis Optimum Parameters
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Here is a sample semen analysis report (optimum ranges) that I was able to obtain from a friend. Infertility testing: In an evaluation of a man's fertility, each aspect of the semen analysis is considered, as well as the findings as a whole...
Combined low-dose hCG, FSH , and T vs conventional treatment to induce virilization and fertility
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Introduction Two primary functions of mature male testis are spermatogenesis and androgen production. Both these functions are under the control of the hypothalamic-pituitary-testicular (HPT) axis. Gonadotropin-releasing hormone (GnRH) secreted...
Fertility after exogenous T replacement
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https://www.urologytimes.com/view/expert-forum-fertility-after-exogenous-testosterone-replacement In this expert panel video, Kelli Gross, MD; Kevin J. Campbell, MD, MS; Darshan P. Patel, MD; Mary K. Samplaski, MD; and James M. Hotaling, MD...
Updates to Male Infertility: AUA/ASRM Guideline (2024)
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Purpose In 2023 the American Urological Association (AUA) requested an Update Literature Review (ULR) to incorporate new evidence generated since the2020 publication of this Guideline. The resulting 2024 Guideline Amendment addresses updated...
Is fertility-sparing exogenous T therapy a real thing?
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https://academic.oup.com/jsm/article-abstract/21/7/582/7699977 It is 2024. Direct-to-consumer testosterone replacement therapy advertisements on social media are pervasive. Academic and private practice men’s health centers are abundant. At...
Optimizing Oral Testosterone Undecanoate (Kyzatrex) TRT: All You Need to Know
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Transcript: Nelson Vergel: Hello, everybody. Nelson Vergel here with ExcelMale.com and DiscountedLabs.com. I'm very honored today to have one of the top urologists here in Texas. He's in Dallas, Dr. Andrew Sun. He's actually in Arlington, north...
Hormonal Treatment for Male Infertility: On -label and Off- label
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12:12-21:46 Here is a summary of the "UROwebinar: Male infertility An updated work up" by the European School of Urology in 10 bullet points: Introduction to Webinar: The webinar, led by Mary Dinkan, covers the latest advancements in...
Male infertility: An updated work-up
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2:00-11:57 Here's a summary of the key points from the YouTube video transcript in 10 bullet points: 1. The video discusses male infertility diagnostics, treatments, and its connection to overall men's health. 2. Basic diagnostic workup...
Post-cycle therapy is linked to fewer withdrawal symptoms from anabolic steroid use: A survey of 470 AAS users.
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Introduction The world of sports and bodybuilding often brings to the forefront the use of anabolic androgenic steroids (AAS), substances that can enhance performance and muscle growth. However, the use of these steroids is not without risks...
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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