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  1. Nelson Vergel

    We Need to Be More Open to Psychedelic and Alternative Treatments

    https://www.excelmale.com/threads/depression-%E2%80%94-advanced-treatments-for-treatment-resistant-depression.30519/
  2. Nelson Vergel

    Medications that Can Impair Muscle Mass and Strength Gains from Resistance Training

    New data on antihistamines https://www.healio.com/news/allergy-asthma/20250714/smaller-fitness-gains-found-in-healthy-adults-taking-high-antihistamine-dose-vs-placebo
  3. Nelson Vergel

    New Podcast Episode: All About Oxandrolone (Anavar)

    https://www.excelmale.com/threads/oxandrolone-anavar-medical-uses-presentation-attached.6864/
  4. Nelson Vergel

    New Podcast Episode: All About Oxandrolone (Anavar)

    This podcast session examines the efficacy and safety of oxandrolone, an anabolic androgenic steroid (AAS), in treating various wasting and catabolic disorders. It explores the drug's pharmacokinetic and pharmacodynamic properties, noting its unique resistance to liver metabolism compared to...
  5. Nelson Vergel

    Oxandrolone (Anavar) Medical Uses- Presentation Attached

    Oxandrolone is a DHT analog. As such, it suppresses estradiol even in men on TRT.
  6. Nelson Vergel

    Oxandrolone (Anavar) Medical Uses- Presentation Attached

    https://www.excelmale.com/threads/all-about-oxandrolone.9187/
  7. Nelson Vergel

    U-Shaped Association Between Testosterone and Fractures

    The TRAVERSE study had guys on Androgel although most were only over 400 ng/dL and not like most of us with T levels higher than that. @madman would know more.
  8. Nelson Vergel

    U-Shaped Association Between Testosterone and Fractures

    From another study: We did not expect these results, because most previous studies showed that testosterone improved many measures of bone structure and quality. In studies involving men with severe hypogonadism, testosterone treatment increased areal and volumetric bone mineral density1-4 and...
  9. Nelson Vergel

    U-Shaped Association Between Testosterone and Fractures

    What was the purpose of this study? The study aimed to investigate the relationship between different sex hormones (testosterone, dihydrotestosterone, estradiol), sex hormone-binding globulin (SHBG), and luteinizing hormone (LH) with the incidence of bone fractures, specifically any fracture and...
  10. Nelson Vergel

    U-Shaped Association Between Testosterone and Fractures

    I find the findings about high T very strange. Briefing Document: Association of Plasma Testosterone and SHBG with Fracture Incidence in Older Men Source: Yeap, B. B., et al. "U-Shaped Association of Plasma Testosterone, and no Association of Plasma Estradiol, with Incidence of Fractures in...
  11. Nelson Vergel

    U-Shaped Association Between Testosterone and Fractures

    https://www.excelmale.com/threads/testosterone-treatment-and-fractures-in-men-with-hypogonadism.29713/
  12. Nelson Vergel

    New Zealand does not let me give blood to decrease high hematocrit on TRT

    Show it to your doctor and engage other men in New Zealand on TRT
  13. Nelson Vergel

    SEXUAL COMPLAINTS IN MISUSE AND ABUSE OF ANABOLICS

    SEXUAL COMPLAINTS IN MISUSE AND ABUSE OF ANABOLIC-ANDROGENIC STEROIDS Matheus Freire, André Rizzuti, Lucas Camara, Gustavo Stocker Faculty of Medicine of Marilia - FAMEMA, Marilia, Brazil, Estácio de Sá University - UNESA, Rio de Janeiro, Brazil, Federal University of Sao Paulo (Unifesp), Sao...
  14. Nelson Vergel

    SEXUAL COMPLAINTS IN MISUSE AND ABUSE OF ANABOLICS

    https://www.excelmale.com/threads/deleterious-effects-of-aas-abuse-on-sexual-and-reproductive-health.25997/
  15. Nelson Vergel

    SEXUAL COMPLAINTS IN MISUSE AND ABUSE OF ANABOLICS

    https://www.excelmale.com/threads/consequences-of-aas-abuse-in-males-sexual-and-reproductive-perspective.23640/
  16. Nelson Vergel

    New Zealand does not let me give blood to decrease high hematocrit on TRT

    New Zealand should adopt the US guidelines and stop discriminating and putting men's health at risk. https://www.excelmale.com/threads/how-u-s-blood-banks-handle-therapeutic-phlebotomy-for-men-on-testosterone-replacement-therapy-trt.32714/
  17. Nelson Vergel

    New Zealand does not let me give blood to decrease high hematocrit on TRT

    @JayD I have attached the letter for download. Draft advocacy letter to NZBS References for NZBS (attach or link as endnotes) Endocrine Society Clinical Practice Guideline, JCEM 2018 – monitoring & 54 % rule MediRequestsOxford Academic AUA Guideline summary – hold TRT if HCT > 50 % ASH...
  18. Nelson Vergel

    New Zealand does not let me give blood to decrease high hematocrit on TRT

    The New Zealand Blood Service (NZBS) explicitly says that erythrocytosis caused by testosterone-replacement therapy (TRT) is not an accepted indication for its therapeutic venesection (phlebotomy) programme. In the words of the NZBS Haemochromatosis & Therapeutic Venesection Policy, section 3...
  19. Nelson Vergel

    How U.S. Blood Banks Handle Therapeutic Phlebotomy for Men on Testosterone Replacement Therapy (TRT)

    How Current U.S. Blood-Bank Policies Shape Eligibility for Testosterone-Replacement-Therapy (TRT) Patients Blood banks now routinely distinguish between two very different donation scenarios for men on TRT, and each comes with its own set of eligibility hurdles and conveniences. Understanding...
  20. Nelson Vergel

    New Zealand does not let me give blood to decrease high hematocrit on TRT

    I really think all of you guys on TRT in New Zealand should start a letter writing campaign. In Aotearoa New Zealand the rules about who can and cannot give blood are drafted and maintained by the New Zealand Blood Service (NZBS | Te Ratonga Toto o Aotearoa), the Crown entity that collects...
  21. Nelson Vergel

    How U.S. Blood Banks Handle Therapeutic Phlebotomy for Men on Testosterone Replacement Therapy (TRT)

    https://www.excelmale.com/threads/where-to-get-therapeutic-phlebotomies-to-lower-high-hematocrit-in-the-u-s.29079/
  22. Nelson Vergel

    How U.S. Blood Banks Handle Therapeutic Phlebotomy for Men on Testosterone Replacement Therapy (TRT)

    How U.S. Blood Banks Handle Therapeutic Phlebotomy for Men on Testosterone Replacement Therapy (TRT) Blood centers have had to adapt their policies because the polycythemia/erythrocytosis that often accompanies TRT creates both medical need (frequent blood removal) and regulatory challenges (how...
  23. Nelson Vergel

    Taurine Deficiency in Sperm Cause of Male Infertility

    https://www.excelmale.com/threads/new-research-on-taurine-improving-hpta-hormone-axis.27266/
  24. Nelson Vergel

    New research on Taurine improving HPTA Hormone Axis

    https://www.excelmale.com/threads/taurine-deficiency-in-sperm-cause-of-male-infertility.14701/
  25. Nelson Vergel

    Taurine – What's It Good For?

    https://www.excelmale.com/threads/new-research-on-taurine-improving-hpta-hormone-axis.27266/
  26. Nelson Vergel

    Taurine – What's It Good For?

    We have only animal data https://www.excelmale.com/threads/can-taurine-help-prevent-testicular-atrophy-animal-data.17546/
  27. Nelson Vergel

    Cost Plus Drugs

    You can on ReliableRx or Wellness Gear - MedsBase.com
  28. Nelson Vergel

    Comparison of U.S. Clinical Guidelines on Hormone Replacement Therapy (HRT) in Women

    https://www.excelmale.com/threads/hormone-replacement-therapy-in-menopause-risks-benefits-myths.32689
  29. Nelson Vergel

    Optimizing Protein Intake for Muscle Growth

    https://www.excelmale.com/threads/this-is-what-everyone-gets-wrong-about-protein-building-muscle.30963/
  30. Nelson Vergel

    Experts Settle the PROTEIN Debate

    https://www.excelmale.com/threads/this-is-what-everyone-gets-wrong-about-protein-building-muscle.30963/
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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