crisler

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  1. L

    Test cyp plus HCG - high estradiol

    I am on the old Dr Crisler protocol: I do .25cc of HCG on day 1 and 2, and 0.5cc (100mg) injection of Test cypionate on day 3. It works well for me. The problem is on day 7 my T level is 580 which is OK for me, but my estradiol is 42. Any suggestions greatly appreciated. Many thanks for...
  2. Nelson Vergel

    Webinar on Clomid, Anastrozole, HCG, DHEA, finasteride syndrome and much more

    Testosterone book authors Dr John Crisler, Nelson Vergel and Jay Campbell discuss their views and asnwer questions on clomid (clomiphene), estradiol management with anastrozole, HCG for fertility and libido, how to treat finasteride syndrome, new injectable DHEA, and subcutaneous injections...
  3. Nelson Vergel

    Webinar with 3 Testosterone Book Authors this Wednesday, 8 pm ET

    It is with great excitement we announce The Ultimate TRT Hangout with Nelson Vergel, Dr John Crisler and Jay Campbell. Join the authors of the 3 of the best selling TRT books for a unique discussion on optimizing men's hormonal health. Some of the topics for discussion: -clomid therapy...
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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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