Testosterone & Fertility: Novel Techniques in Monitoring & Treating Hypogonadal Fertile Men: SERMs, hCG, rFSH, Aromatase Inhibitors

madman

Super Moderator
Nelson's Excel kicking facts here!

Dr. Bernie dropping gems!

Something everyone needs to keep in mind here!

* There are very few large RCTs comparing theses strategies in the fertility-seeking hypogonadal male!




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Limitations/Future Directions
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Key Takeaways
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Benefits

* Preserve fertility

* Increase natural T




Clomiphene Citrate (CC)

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Application

Dosing

Side effects/Disadvantages

Benefits
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Benefits

* Preserves fertility

* Maintains testicular size


* Concomitant use with TRT




Human Chorionic Gonadotropin (hCG)
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Application

Dosing

Side effects/Disadvantages

Benefits


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* Typically reserve rFSH as an addition to cases of unsuccessful hCG monotherapy


* Not effective alone or with TRT to preserve fertility




Recombinant FSH (rFSH)

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Application

Dosing

Side effects/Disadvantages

Benefits


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* Historically controversial giving exogenous T will suppress GnRH, but low dose hCG can maintain testicular function




What about men who Can't/Won't stop TTh and desire Fertility

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Concurrent TRT + hCG
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hCG Mixing Calculator

HCG Mixing Protocol Calculator

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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