TRT blood tests

What it the purpose of Sex Hormone Binding Globulin (SHBG) ?

Jun 17

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My question might be a basic one, but what is the purpose of Sex Hormone Binding Globulin (SHBG)? In general terms I appreciate that SHBG binds to Total Testosterone (along with Albumin) to give us Free Testosteron. My question is not about...

Hormones Men's Health TRT blood tests

High Estradiol in Men on TRT: What to Do

Jun 11

Briefing Document: Estradiol in Men on TRT Source: Excerpts from "High Estradiol in Men on TRT: What to Do" by Nelson Viegel (excelmale.com) 1. The Role and Importance of Estradiol in Men Core Idea: Estradiol, often misconstrued as a solely...

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Diagrams: Accurate Androgen and Estrogen Measurement in Human Serum and Plasma

Jun 06

* Probably the most challenging forms to quantify, due to their relatively low concentrations are the so called free forms. The free forms of all the hormones (shown in Figs. 1–3) are the hormones not bound to proteins, or conjugated to other...

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Estradiol: The "Other" Male Hormone

May 31

Download slides (from my book "Beyond Testosterone"): Estradiol in Men Slides Estradiol in Men: The Stigma In the 2014 film The Other Woman, Cameron Diaz, Leslie Mann, and Kate Upton, portray three jilted females who discover they are...

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Managing the Testosterone-to-Estradiol Ratio in Men on TRT

May 29

Managing the Testosterone-to-Estradiol Ratio in Men on TRT Introduction Testosterone replacement therapy (TRT) in hypogonadal men often leads to an increase in estradiol (E2) levels due to the aromatization of testosterone. This alters the...

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The TRT Guide from ExcelMale.com

May 17

Understanding the Symptoms, Diagnosis, and Treatment of Hypogonadism in Men Hypogonadism, a condition characterized by low testosterone levels, can significantly impact a man's quality of life. ExcelMale.com offers a comprehensive guide to help...

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What Every Man Needs to Know | Testosterone 101

May 17

Testosterone is a key hormone for men's health, but what happens when levels drop? In this episode, Dr. Alex Tatem and KG break down everything you need to know about testosterone—what it is, signs of deficiency, when to get tested, and the best...

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Regular testosterone test overestimates hypogonadism in men compared to the LC-MS/MS assay

May 12

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* IA compared to LC-MS/MS in hypogonadal men overestimates significantly both the prevalence of biochemical Hy and TRT compensation both for TT and cfT. These results highlight the role of LC-MS/MS and SHBG assessments in every day clinical...

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Changes in Blood Cells May Explain Why Some Older Men Had Cardiovascular Issues Using Androgel in the TRAVERSE Trial

Apr 25

Background: Please read this previous article: https://www.excelmale.com/threads/heart-palpitations-and-afib-in-older-men-on-testosterone-signals-from-traverse.28247/ New Data...

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How to Find a Good Doctor that Prescribes Testosterone Plus hCG: TRT Near Me

Apr 22

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If you are looking for a TRT doctor that can treat you where you live (US only), please click on this banner:

I hope this information helps you empower yourself to find the...

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Controversies with Testosterone Replacement Therapy: Lecture by Dr Khera

Mar 28

As usual Nelson's Excel is where it's at! Mohit Khera, MD, MBA, MPH, Professor of Urology, F Brantley Scott Chair in Urology, Medical Director of the Laboratory for Andrology Research, Medical Director for the Scott Department of Urology...

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TRT: where do the latest guidelines agree and differ?

Mar 27

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Purpose of review The incidence of testosterone deficiency and the number of men on testosterone therapy (TTh) has increased significantly over the past 3 decades. This rise has been accompanied by controversies surrounding the indications and...

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TRT Hormone Predictor Widget

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