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  1. Nelson Vergel

    hCG Plus TRT Testicular & Fertility Restoration Protocol

    https://www.excelmale.com/threads/why-use-hcg-with-trt-a-clinical-review.32653/
  2. Nelson Vergel

    hCG Plus TRT Testicular & Fertility Restoration Protocol

    Hey guys, what do you think I am missing in the downloadable attached PDF? This attached 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...
  3. Nelson Vergel

    Creatine: Everything You Need To Know

    Several supplements and dietary strategies can enhance creatine’s effectiveness: **Carbohydrates and Insulin Response** Consuming creatine with fast-acting carbs (like dextrose or maltodextrin) significantly improves muscle uptake. The insulin spike helps shuttle creatine into muscle cells...
  4. Nelson Vergel

    Testosterone Replacement Clinical Guide from ExcelMale.com

    Testosterone Replacement Clinical Guide Free PDF Download for members of ExcelMale.com
  5. Nelson Vergel

    NO: The One Molecule That Supercharges Your Heart, Brain, Metabolism, and Sex Life (And Why Most People Are Dangerously Deficient)

    I never found out how he died. His girlfriend never returned by calls and messages. I had dinner with him months before he died and he seemed OK. We had a great time. This was his stack: Gene's Nitric Oxide Stack - Excel Male Health Forum
  6. Nelson Vergel

    Hello from Boston area!

    Check DefyMedical.com. One of the oldest and most established telemedicine clinics in the country. You may want to read this: https://www.excelmale.com/threads/hcg-plus-trt-to-prevent-reverse-testicular-shrinkage-and-decreased-fertility.435/ It depends on the insurance company. All cover...
  7. Nelson Vergel

    Cortisol, Testosterone, and Coronary Heart Disease

    This study looked at the ratio of cortisol to testosterone. High C/T ratio was associated with ischemic heart disease. It means high cortisol/normal T or normal cortisol, low T. With a little help from my friend Claude, here is what I found: Testosterone replacement therapy (TRT) has a...
  8. Nelson Vergel

    Hip Replacement Surgery on TRT- Experiences

    It still puzzles me. I have been on TRT for almost 40 years, have a third of the immune system of most men, have had over 10 surgeries, and not a single infection. In fact, I think I heal faster than people I know. My hematocrit is never over 53. But we are all different. I wonder if the men...
  9. Nelson Vergel

    Hip Replacement Surgery on TRT- Experiences

    Very strange data : Association of Testosterone Supplementation with the Risk of Infection following Primary Total Hip Arthroplasty
  10. Nelson Vergel

    NO: The One Molecule That Supercharges Your Heart, Brain, Metabolism, and Sex Life (And Why Most People Are Dangerously Deficient)

    Based on the transcript, the medication mentioned is a fixed-dose combination of isosorbide dinitrate (ISDN) and hydralazine. This drug combination was studied in the A-HeFT (African-American Heart Failure Trial) and showed remarkable results in African-American heart failure patients. Dr...
  11. Nelson Vergel

    Upcoming FDA Expert Panel on Testosterone Replacement Therapy for Men

    One of my comments: The current labeling for injectable testosterone cypionate and enanthate, which recommends dosing intervals of 50–400 mg every two to four weeks, warrants reconsideration in light of contemporary pharmacokinetic and clinical evidence. Emerging data suggest that more frequent...
  12. Nelson Vergel

    Upcoming FDA Expert Panel on Testosterone Replacement Therapy for Men

    Thanks for letting me know. Too bad I would have to fly from Portugal. Hopefully, we can see progress in the labeling.
  13. Nelson Vergel

    Moderate alcohol intake did not affect sperm quality and increased testosterone in men

    On the other hand: Habitual alcohol consumption associated with reduced semen quality and hormones - Excel Male Health Forum
  14. Nelson Vergel

    Testosterone Therapy and Hematocrit

    Hematocrit usually stabilizes after a year. I suggest that a CBC, CMP, TT and FT are done at week 8 and week 16 if not dose adjustments happen. Otherwise, every 4 weeks until you feel stable enough. Keeping your T dose at around 100 mg per week should be enough for most men. No data on whether...
  15. Nelson Vergel

    Deep Dive: Research on Pornography Use, "Addiction," Mood, Libido, and Sexual Function in Men

    More on porn addiction: How to Recover from Porn Addiction and Save Your Marriage - Excel Male Health Forum
  16. Nelson Vergel

    Who has a personal account of seeing improvements in partnered-sex after quitting porn and masturbation?

    Did a little more digging: Deep Dive: Research on Pornography Use, "Addiction," Mood, Libido, and Sexual Function in Men - Excel Male Health Forum
  17. Nelson Vergel

    Deep Dive: Research on Pornography Use, "Addiction," Mood, Libido, and Sexual Function in Men

    Porn Addiction- Diagnostic Landscape and Controversy The clinical status of problematic pornography use remains contested. Compulsive Sexual Behavior Disorder (CSBD) is recognized by the WHO in the ICD-11 as an impulse control disorder, but the DSM-5 does not recognize it as a standalone...
  18. Nelson Vergel

    Oxandrolone (Anavar): A systematic review (2025) - 24 studies & over 1,900 patients

    Podcast episode: New Podcast Episode: All About Oxandrolone (Anavar) - Excel Male Health Forum
  19. Nelson Vergel

    Oxandrolone (Anavar): A systematic review (2025) - 24 studies & over 1,900 patients

    Another review: Oxandrolone (Anavar) Medical Uses- Presentation Attached - Excel Male Health Forum
  20. Nelson Vergel

    Who has a personal account of seeing improvements in partnered-sex after quitting porn and masturbation?

    I notice that I am also more present with my partner and return to my horny ways. Porn really is an addiction that robs us of endogenous dopamine and drive. We become pacified. I notice I do it when I am bored or can’t sleep. But, like everything we discuss on this forum, moderation is key...
  21. Nelson Vergel

    Clomiphene Citrate (Clomid) in Men With Low Testosterone - Do we Need to Monitor IGF-1 in All Patients?

    https://www.excelmale.com/threads/clomid-clomiphene-reduces-igf-1-a-measure-of-growth-hormone.32445/
  22. Nelson Vergel

    Which clinics prescribe propionate?

    Some info in these two pages: Testosterone Propionate Discontinued by all pharmacies - Excel Male Health Forum
  23. Nelson Vergel

    Practical Clinical Summary on Testosterone Therapy in Women

    Practical Clinical Summary on Testosterone Therapy in Women (From ExcelMale.com) Based on the ExcelMale forum threads and related clinical literature, here's a comprehensive extraction of practical content for a clinical article: Physiological Role & Rationale Key Functions: Testosterone...
  24. Nelson Vergel

    Using protocol change to spike dopamine?

    Here is an interesting protocol : Low Brain Norepinephrine Levels in ME/CFS and Long COVID Pt. II: A ChatGPT Based Treatment Program - Health Rising
  25. Nelson Vergel

    Trouble Finishing (GLP-1 & TRT protocol discussion)

    Don't do it. Your E2 corresponds to your T level. Your prolactin is fine. You are good. Don't change anything.
  26. Nelson Vergel

    Dopamine: Where and When It Acts - Paper: Spatial and temporal scales of dopamine transmission (Liu et al., 2022) — key takeaways

    https://www.excelmale.com/threads/androgen-modulation-of-mesoprefrontal-dopamine-systems-and-the-effects-of-these-actions-on-the-adult-male-brain.30723/
  27. Nelson Vergel

    How Anabolic Agents Can Save Your Muscles: One Man's Journey from Death Sentence to Thriving at 66

    How it all started: The Story of Dr Michael Dullnig- An Anabolic Pioneer - Excel Male Health Forum
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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