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  1. J

    Testosterone treatment in older men: clinical implications and unresolved questions from the Testosterone Trials

    Thanks Madman for finding and posting these excellent studies/reviews that you regularly send out.
  2. J

    My Trip To NutraBio

    Will is the man! That sounded like an informative two day tour, cool write up, thanks for sharing Will!
  3. J

    I am saddened to inform everyone of Lee Myer's accidental death

    Shocking indeed. I don’t believe it =(. Natural vs. Testosterone Therapy was one of the first few books I read on the subject and still one of my favorites. I frequented Lee’s site often for the excellent content, wide variety of subject matter and great podcasts. Thank you very much Lee for...
  4. J

    Ask The Urologist Anything (Dr Michael Rotman)

    Nelson and Dr. Rotman, sorry I am a little late to this conversation about the prostate and ICS along with urinary frequency, but I am curious, is it abnormal to need to urinate once a night? From what I have read this is fairly common, but maybe that is incorrect? If your sleep is disrupted...
  5. J

    Ask The Urologist Anything (Dr Michael Rotman)

    Nelson and Dr. Rotman, sorry I am a little late to this conversation about the prostate and ICS along with urinary frequency, but I am curious, is it abnormal to need to urinate once a night? From what I have read this is fairly common, but maybe that is incorrect? If your sleep is disrupted...
  6. J

    Question about Discounted Labs Sensitive Estradiol Test

    Wondered about that. I suppose this is a question for Labcorp, but do we happen to know which days Labcorp sends the specimens out each week for that particular test or does it vary? Probably varies by location? Also, I suppose it would only make a difference of a couple of days, but just...
  7. J

    1 Yr Update with 250mg/mL Lab results are in!!

    Madman, thanks for another good book recommendation, I will have to get this one as well! I picked up Williams endo text recently and have been enjoying some of the more pertinent sections, but would like to read this one in addition as it is obviously more centered on testosterone specifically...
  8. J

    My newest book: PEDs,a physician's and former athlete perspective

    Thanks Dr. Touliatos! Read this is one sitting, really enjoyed some of the historical background concerning PED use in sports (particularly some of the stats in the various Olympic games) and the nuances concerning the various drugs, how they interact in the body, and hearing the personal...
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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